Truck

Dumbass, ugly and/or retarded. Usually used in Federal prison to call someone stupid in a playful non disrespectful way

1- "c.o. wouldn't let me go to lunch because i forgot my green shirt."
"How da fuq did you forget your green shirt, you're a truck"
2- "hey go ask someone for some hair wax, you look like a truck"
3- "if you don't stop smoking k2 they're going to take you overe there"
"The bus garage?"
"Yeah, they fix trucks there"