I'll pump her full of sperm and make her feel better

Blackmailed seduced into sex and dumped it in her. Well, it's my sister. She'll forgive me

Husband, don't come in! I'm going to cum and then I'll come and bring my sperm in my panties

Sister, why did you show me your tits? Now take your pants off, too

Bro, you touched my tits and showed me your dick, but can you fuck me?

"Sister, are you masturbating? Why don't you invite me over? It's more fun together."