pant penis 

The bunching up of one's trousers around one's pelvic area, usually involving the zipper giving the illusion that one has an erection.

Note: Can apply to women too. It is usually more humourous when it does.

Cindy, you totally have a pant penis!
Gimme a sec Brian, I gotta fix my pant penis.

pant penis by Loki 1337 July 20, 2008

Pant Penis 

When you sit while wearing pants, extra fabric in the crotch forms a fold that resembles a penis.

I need to pull my pants or else I’ll have a pant penis!

Pant Penis by Jeanne Mango October 1, 2019

panapenis 

An extra long monty panesar penis.

Shaun: Bunt
Me: PANAPENIS!

panapenis by Montio February 4, 2008