What is Anal Sex? Gia and Penelope are two school friends who come from very conservative and religious households. One day, Penelope shares with her bestie that she saw her stepparents having anal sex and just canât stop thinking about it. This also sparks Giaâs curiosity, so the two try using a sex toy to explore their assholes together. Unfortunately, Dorian and Ken, their stepdads, are in the next room and come see whatâs going on after hearing loud noises. Shocked to discover that their stepdaughters are doing this, the stepfathers use this situation as an opportunity to teach them how to take anal sex seriouslyâ¦by swapping stepdaughters and teaching them how to do it.