1 definition by RealGee

Plank

A woman that doesn't know what to do during sex, typically a lazy girl or amatuer who lays on her back or stomach and planks while the man does all the work. Making this unpleasant to have sex with.

My dude, I finally had sex with her, and she didn't know what to do , that bitch was a plank.

by RealGee February 26, 2016