Casperwhacking

1. The act of whacking off or being whacked off by a ghost or succubus.

2. The act of finding oneself whacking off a penis that has long been amputated.

Hey Melissa do you want to hit up the abandoned asylum and see if we can do some casperwhacking?

Shit I woke up casperwhacking again. I'm not sure why I still think I have a penis!? That fuckers was amputated years ago!

Slipjack

A prison term for placing ones weiner between another males lubed butt cheeks, squeezing them together like boobs amd proceeding to hump vigorously. Also know as the bro slide if you're not incarcerated

Ron
Man this prison shit is for the birds. I almost wish I was gay.

Phil
I have a way we can do it and not be gay. It's called the slipjack. You want to give it a shot?

Ron
Hell yes! I've been wanting to slipjack them cheeks for a year already! Let's get it on!

Bitch Flaps

Vaginal lips that are clearly visible through pants. Particularly lips that are hanging on bloth sides of the seam. Also referred to as camel toe or moose knuckles (the larger of the two varieties.)

1. Holy shit Jared! Check out the bitch flaps on that one!