When I was a senior in highschool i took a course to do well on my SAT. In my group was a girl skiny, not prety (3 or 4 out of 10) at all but with nice ass and decent legs. After a couple of classes we had a group assignment and she ended up working with me and other people. During the work she told us she had celebrated her birthday the weekend before and she told us that all her girlfriends gave her thongs as birthday present. She also said that she had just begun wearing thongs a couple of months before, keep in mind it was 2000 and thomgs were just beginnign to be a thing in my country.
At the end of class we were talking and I asked her if she was wearing a thong that day and she told me not but she told me that if I wanted she could wear one the next day. Next day she sat next to me and in the middle of class I asked her about her underwear and she pulled the string off her pants I will never forget that green string pulling out of thenside of her jeans.
That afternoon she invited me to her place and at some point her mom left for a while and I managed to convince her to show me the full thong, she pulled her pants down, modeled the thong for me and then sat on my lap we made out for a while and i fondled her ass a lot, then i moved to her pussy over her thong, she got wet fast and after a couple of minutes she was moaning hard but suddenly she stoped us. She said she wasn't a virgin but that it was to fast for her and asked me to leave. When i was leaving her mom appeared.
Next day we decided to start dating and one week later we had sex for the first time, we dated for about 3 months sex was good and she only wore thongs when we were together but I met hotter and prettier girls so it ended quickly