Have you heard about the latest sensation? It's called "Rodeo Sex". That's when you mount your wife doggy style and in the middle of the act you whisper in her ear, "Your sister has a tighter pussy than you", then try to hold on for 8 seconds!
There's an incest competition in my town this weekend.
I'm going to enter my sister.
Your sister's so anorexic she has to wear suspenders with her skinny jeans.
Redneck Dirty Talk
This brother was banging his sister, and he says, "You f*ck like Mom," and she laughs. He says, "What?" She says, "That's what Dad said."
Q: Why can't a woman ask her brother for help?
A: Because he can't be a brother and assist her too.