Tell her to give you a blow job

From Create Your Own Story

"I guess you can suck it" you say. It's just oral, there is nothing wrong with that, you say to yourself.

Listening to you, your sister smiles and starts to rub your cock again. She leans her lips over your shaft and spits, right on the tip. She opens her mouth, swallowing an inch of your cock. You moan as her tongue swirls around your tip. Smacking on your cock she stuffs her throat with it.