My stepfather's visit to my room is a frequent occurrence when my sister is enraged and causes me to undress

When my strict stepdad comes to my room, it\'s never for the reason he claims. Today, my sulky sister is the culprit. I\'m forced to undress, and her angry face turns into lust when she sees my big ass. Stepdad joins in, and we have a wild fuck fest, ending with a messy cumshot.