I only remember one scene from a movie I watched on DVD probably around 7 years ago. There was a teenage boy and a fat teenage girl having sex in a pool and I think the girl was wearing a dress(maybe pink) like they were at a high school dance or something. There was a part when the guy said “Are you on your period?” and the girl responded with “No, I’m a virgin.”
“Cabin Fever 2: Spring Fever”(2009)
http://www.imdb.com/title/tt0961722/