It was this guy's first day in the penitentiary; he was in a cell with a
huge burley inmate, and he was pretty nervous. At lights-out, the inmate
jumped out of his bunk, and, turning to our hero, said, "We're going to
have sex! You want to be the Mommy or the Daddy?"
A very terrified hero managed to squeak out, "Uh, well, uh, I guess
I'll be the Daddy."
"OK," smiled his roommate, "get down here and suck your Momma's dick!"