Alcohol used for pregaming that you keep in your trunk to drink in the parking lots of establishments when you're too broke to pay for drinks inside
"Hey guys, I know you're going out, ya want some trunk booze?"

"I'm pretty broke tonight... bring the trunk booze!"
by ClosetSensualist January 31, 2010
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Alcoholic beverages that you find in the trunk of your car because on a previous night, you were too cheap or poor to buy drinks at a bar or club. Often used by a creepy Irish guy to try to entice you to sleep with him. See pregaming.
Hey guys, I know youre going to the club tonight, ya want some fuckin trunk booze?

Hell yeah!!! My unemployment check didn't come in yet.
by Alisha Boom Boom January 31, 2010
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