A guy who is always ready for a casual sexual encounter; male equivalent of a jump off.
"I booty called John at 3pm on a Tuesday, of course that hardwood said yes!"
hard wood means to have a boner. hard meaning well hard and wood meaning penis. there u have it hard wood
dude1: damnit dude ive got got hardwood looking at her.
dude 2: what??
dude:1 a boner dumb shit