Your most unexpected encounter which led to sex (share stories)

[Indian Race Troll (IRT)]

For me it would have to be a year back. I was taking a class which was a physical education requirement and there were 15 girls and 7 guys, it was a tennis class and took place outside. Start of the year it was somewhat cold (doesn't get that cold out here anyways though) but a month into the class it gets warmer and everyone wears their summer clothes. Meet a few girls and chat with them about stuff, was described as the funny guy in the class. One day I was waiting on a ride which 10 minutes later was still not there. So a girl from my class who came out calls my name, I look over, smile, and we start chatting a bit. Girl is a tall brunette (around 5"8) with a nice build (muscular thighs and nice ass) and because of the sun she had the nice tan going on. She was wearing really short shorts and a t-shirt. 5 minutes later the ride is still not there so she decides to offer me a ride, I had class in about an hour.

On the way she stops at her apartment to pick something up but said it is a long way up and may take her time to get back down, and she was taking the keys with her so I followed her up to her apartment. We enter, she is searching around, catches me staring at her ass and says "what?". I smile and act like I didn't look. She comes up to me smiling and says "what? Why are you so quiet all of a sudden".

I smile again and just look into her eyes, then say "you know what". She smiles, comes up to me, we make out for a few seconds and then have sex despite being sweaty which btw feels that much better. It was not expected at all but it was amazing.