Cock or walk

A term used by a man that drives someone out to the middle of nowhere, stops the car, and demands that the other person have sex with them (cock) or get out and walk back home. Not necessarily rape or assault but pressure to perform none-the-less.

Her: Oh Johnny, why did you park the car on this deserted gravel road many miles from my home?! Are we out of gas?
Him: Cock or walk, baby. Cock or walk.