When railing a broad doggy-style, your thumb is inserted into her anus, as you twist your hand back and forth, like steering a truck. Often used as a test for willingness for anal sex, sometimes resulting in the dolphin
I gave Colleen the truck driver last night to see if she was down for some backdoor, but i got the dolphin.
by Killa Money Hacksaw Juggalo January 16, 2009
1 more definition
This is when you're banging your chick doggy style and switch from the snatch to her ass, we call this going from the main box to the brownie
I pulled the truck driver on Michelle last nite and she was pissed.
by Larry Lowbed January 20, 2009