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4.
When one of your hoes gets uppity, you gotta punish the biotch. Throw her azz in the Caddy's trunk, and take a ride down the bumpiest road you can find for a couple of hours.
Listen, Cunt..... don't make me take your ASS trunkin.
by Dr.Dicknob July 18, 2003
 
1.
When you have to ride in the trunk because your driver is under the age of 18.
Trunker: I am really beat up today because I had to go trunkin' Last night.
Responder: Why?
Trunker: We were celebrating because she just got her license.
by Kd45 February 05, 2010
 
2.
Much used like the word 'Chillen', Trunkin' is most commonly used as a way to describe what someone is up to. When someone is trunkin' you know they're a laid back person you likes to chill with their friends.
Mark: "Hey Buddy, what's up?"
Eugine: "I'm just trunkin' man, How about you?"
by Nataratatatat January 19, 2011
 
3.
Trunkin is when you send someone a drunk text. One you don't remember even texting because you are so intoxicated. The serial trunker checks their phone the next day in a panic, not knowing who or what they have text. When someone admits they have a serious trunkin problem, they will delete the text after they have sent it so when they wake up in the morning they don't know it even existed.
The girl had such a trunkin problem, she had to go to rehab. "Hi, I'm Jane and I have a trunkin problem."

Damn dawg, my ex keeps trunkin me in the middle of da night.
by Sturt Honeybadgers October 16, 2011