The party is in full swing and your step-sister is SO grateful for all your help. She wishes she could show you just how much she appreciates it... here's an idea, why don't you go with her to her room to check that no one has been up there? Once you're alone, she quickly starts to suck your cock and then, even though someone could walk in and catch you any second, your step-sister wants you to bury your cock deep inside her.
