Listening to that second story made me so hard. That must have been so hot to see that in person I was able to get a good picture in my head. The more stories about her the better. When was the most recent slip with your brother's girlfriend? Do you have any more stores about Girl 17?
The most recent slip I saw from my brothers girlfriend was when they had a party at their place a month ago. She was wearing a red blouse tucked in to her black pants. Near the end of the night I walked into the kitchen and she was sitting on the counter talking to her friend. Her shirt had become untucked at the back and I saw two inches of her black g-string. Unfortunately, the next time I walked into the kitchen she had tucked her shirt back into her pants.
I have tons of stories about Girl 17. Here are a few that were super hot. One time her boyfriend and I were throwing around a football at the park. She came and met up with us because we were all going to head to the beach to meet up with more people. Right as she arrived, her boyfriend threw the ball over my head and it went over the fence behind me. Before I had even turned around to start heading towards the ball she said "I'll get it" and ran towards the fence. When she lifted up her leg to climb up the fence, her pants slipped down and I saw 4 inches of her pink thong with a baby blue triangle. For the rest of the day I kept seeing her thong slip.
One time I was at the bookstore at the college we both go to. She was standing at the end of the line waiting to buy some books and she was wearing a grey hoodie and yoga pants. I grabbed my books and talked to her while we waited in line. She realized her shoe was untied and asked me to hold her books while she tied it. She got down on one knee and her black thong with a pink triangle popped out 5 inches. She finished tying her shoe, stood up and picked up her pants before asking for her books back.
Another time we went to the bar and there was a really drunk girl outside that was trying to pick a fight. I noticed her talking with Girl 17 and then all of the sudden she shoved Girl 17 and she fell on her ass. Her boyfriend and I quickly broke up the fight. I offered to help Girl 17 up but she said she was fine and stood up on her own. When she did this I saw 3 inches of her red lace thong. We decided to call it a night and got in a cab. Her stop was first so I got to watch her get out of the cab. When she did her pants slipped down even more exposing 5 inches of her whaletail.
Speaking of girls who have their thong showing 9 out of 10 times, Girl 24 always has her whaletail on display. I'm friends with her twin brother and I have seen her thong a ton of times over the years. In Grade 12 I ended up having 3 classes with her and I saw her thong multiple times almost everyday. One time we were in math class writing a test and she was sitting a few rows in front of me. She was wearing a orange sweater and jeans and from where I was sitting I couldn't see her ass. Some of the people in our class finished the test and got to leave early. When one of the kids next to me stood up, it gave me the perfect view of Girl 24's ass. When she finished her test she leaned forward to grab her bag off the ground. Her shirt lifted up and I could see a third of her ass and 6 inches of her brown multi-strapped thong. When she stood up she pulled her sweater down before handing in her test and leaving.
Another time we were in biology class and the teacher told us to come to his desk and hand in our assignments. I got in line behind her and she was wearing a white tank top and green capris. Instead of walking to the teachers desk normally when she got to the front of the line, she tried to be funny and took these big long strides over to his desk. Every time she spread her legs to take a step I could see the bottom of the triangle of her white lace thong. Her tank top was pretty low so I couldn't see how high her thong straps were sitting on her hips. Later that day we had math class and her and her friend sat behind me. Her friend was directly behind me and she was one row over. The teacher left the class for a second and everyone just sat there in silence. Suddenly I heard a snap sound and it sounded like it came from behind me. I turned around and I saw that her friend had given her a wedgie. Her friend had pulled it pretty high and I could see a quarter of her ass and 6 inches of her thong. Everyone in the class burst out laughing and she was so embarrassed. She turned bright red and stuffed her thong back into her pants and pulled her tank top down.
One time I went to her and her brother's house to hang out with her brother. We played video games for a while then he said that we should go play on the new trampoline they just got. When we went outside, she was already jumping on the trampoline. She was wearing a yellow crop top t-shirt and plaid pajama pants. Every time she bounced I could see her pants slip down more and more and I could see the straps of her pink g-string on her hips. She told us that she had just learned how to do front flips and her brother said "Prove it". She tried one but didn't rotate around the whole way and landed on her ass. She stood up to try again and I saw 5 inches of her g-string and a quarter of her ass. She pulled up her pants a couple of inches but her g-string was still showing. She tried it again but this time she landed it. When she landed her pants slipped down even more and I saw 2 thirds of her ass and 8 inches of her g-string. We all jumped around on the trampoline for the next hour before I left and I kept seeing her g-string slip. I found this video a couple of weeks ago and it reminded me of the whole experience:
http://www.dailymotion.com/video/x45q0c_her-pants-fall-down_redband
Speaking of twins, Girl 25 and Girl 26 are smoking hot identical twins that I have know since grade 8. They are both tall, skinny girls with long blonde hair. One time I was at a party and Girl 25 was there. She was wearing a black sweater and grey jeans and the whole night she kept bending over and exposing her red thong. At one point there was no seats in the living room and she decided to jokingly sit on my lap. She only stayed there for a few minutes before standing up and sticking 6 inches of her whaletail in my face. Later on in the night she must have noticed people staring at her ass because she had tucked her sweater into her pants.
Another time I was in art class and Girl 25 was wearing a white and blue striped sweater and skinny jeans. The entire class she had her purple thong with gold trim sticking out of her pants. Her pants were pretty high but I could still see 3 inches of her thong which made me think that she did it on purpose.
On their birthday this year, we were hanging out in their backyard playing beer pong. It was way too windy to be playing beer pong but we did it anyway. At one point Girl 26 was getting ready to take her shot. She was wearing a blue t-shirt and a white skirt. All of the sudden a big gust of wind came and lifted up her skirt. I got to see her entire ass and her little red g-string. The sexiest part is that she didn't even seem to notice!
Girl 27 is a tall, skinny indian girl with long black hair. One time I was late for class because I slept in. I was walking along the side of the school to get to the main entrance. I was looking in all the windows as I walked by and I saw her sitting on the window sill inside one of the classrooms. She was wearing a black backless shirt and skinny jeans. She had 3 inches of her red thong with white polka dots on it showing. It was super sexy because she was basically showing her whaletail off to anyone who walked by that window.
Another time we were at the beach drinking some beers with a bunch of friends. She was wearing a black dress and a red jacket. It was around midnight so we had a fire going and there was no one else on the beach. Over the course of the night she got more and more drunk and by midnight she was wasted. She kept forgetting she was wearing a dress so she would sit with her legs wide open and I kept seeing her purple panties. At this point I couldn't tell if she was wearing a thong or not. Suddenly she declared that she was going to jump in the ocean and swim around. Nobody had a bathing suit so in front of everyone she stripped down to her purple g-string. She put her arm over her tits as she ran into the ocean and then dived into the water. When she got out of the water she brushed her hair out of her face with both hands showing off her wet C-cup tits. When she came back to the fire she stayed in just the g-string for half an hour before finally putting her clothes back on. For the rest of the night I kept seeing up her dress.
Girl 28 is an average build girl with long brown hair. One day I saw her sitting on a bench when I was walking to my next class. She was wearing a dark green sweater and black pants. I stopped to talk to her and she said she was just about to go to class to and that she was heading in the same direction as me. We were facing each other and she bent over to pick up her purse and then stood up. Before I gave her time to pull up her pants or pull down her sweater I noticed she had left her coffee cup on the ground and I said "Aren't you forgetting something?". She then turned around and pointed her ass at me while she bent over to grab the cup. 7 inches of her white g-string popped out of her pants and she had a third of her ass showing. It was super hot because I couldn't see how high the straps of her g-string were sitting on her hips because her sweater was pretty low. She then pulled down her sweater and I walked her to her class. I remember wishing I had my next class with her so I could stare at her whale tail the entire time.
This next story is one of my favourite whaletail experiences ever because this was the only time I ever saw two thong slips at the same time. I was in summer school for math in grade 11 and her and her friend were in my class. One day I showed up to class and she was sitting in front of me and her friend was sitting a couple of rows in front of us to the right. Girl 28 was wearing a black long-sleeve shirt and grey shorts and her friend was a short, skinny blonde girl and she was wearing a white sweater and jeans. Her friend had 3 inches of her pink thong showing the entire class and at first I didn't see Girl 28's thong. Near the end of the class the teacher gave us some time to work on our assignments and Girl 28 had a question. She walked over to her friend with the pink thong's desk and squatted down to ask her a question. When she did this, her shirt came up and 5 inches of her black thong popped out of her shorts. When she came back to her desk her thong was still showing and it was on display for the rest of the class. I then decided to go to the washroom and as I was walking through the class to the door I noticed this emo girl with her head on her desk. She was a short, skinny girl that had brown hair that was dyed green. She looked like she was sleeping and when I walked behind her I saw two inches of her red thong.