noun - when the girl that you're having sex with doesn't really do anything other than lay there and take it. She doesn't moan, shift her hips, kiss/bite your neck, wrap her legs around you, nothing. You're pretty much doing about 100% of the work.
This is normally attributed to virgins who have no idea what sex is or have no clue what to do. Also attributed to girls who, even though they aren't virgins, either still don't know what to do, are too afraid to try and take control, or just don't want to do anything.
Guy A: "Dude, you had sex with that chick from the bar! How'd that go?"
Guy B: "Man, Lisa was a Warm Corpse. Virgin."
Guy A: "Damn. That sucks. Nice body though."