Your sister Molly is supposed to finish her chores before mom and dad get home but she is just sitting around procrastinating! She has been pushing your buttons all day and really getting an attitude! Someone needs to fuck her so she stops being such a bitch. You noticed she wasn't wearing panties... shes basically begging for you to do it! You slip your cock in her while she is bent over making her bed! She freaks out but goes along with it, saying you're going to regret it!