SmashDog

A "friend" who you see as nothing but an easy fuck!

Andrew: "Hey Devon, what's up with you and that girl from the club"

Devon: "Oh Lisa? Yeah we cool, she's just my smashdog ya know?

SmashDog by B from Valley February 21, 2009

smash dog 

when a man is having sex with a woman then he pulls out and smashes his dick with a hammer

yesterday, i smash dogged myself when i was banging my girlfriend

smash dog by ricky flanders November 3, 2010