1 definition by Lax Bro Leroy

During sex when a man packs a fat lip of lady grizz (chewing tobacco) and is banging a girl from behind. When he approaches climax he starts making beeping noises like a truck in reverse, and proceeds to pull his bottom lip outward and tilting his head downward allowing the warm clump of chew to fall on the girls back.
1) Bro, i was hittin it from behind with a fat boy in and then i dump trucked a huge shwab of grizz wintergreen on her ass.

2) Dude, me and that chick banged at the party last night, but i didn't have time to take out my lipper so i had to dump truck her ass.
by Lax Bro Leroy March 16, 2011
Get the Dump Truck mug.