Spiking multiple splinters around your shaft while cutting a customized hole into the trunk of a tree (preferably with many splinters inside). This technique consists of inserting the splintered penis into the tree, and then severing your shaft so that it stays inside the tree so that your trunk is apart of the tree trunk.
"Some guy gave me $20 to go trunking with him."
"Imma need a dick transplant after that wild trunking session."
"Imma need a dick transplant after that wild trunking session."
by uncle_stroking_lover May 22, 2024

by Hey future jon July 3, 2021

Phrase used by (certain relefriend) aka friend who is my relative because one time I said “is Bruno in the trunk?” Referring to Bruno madrigal and shrek dueling (yugioh) in the trunk.
What’s in the trunk?
Oh Bruno and shrek
What are they doing?
Dueling
In the trunk?
Yep.
So your telling me Bruno and shrek are dueling in the trunk?
YEAH!😃
Oh Bruno and shrek
What are they doing?
Dueling
In the trunk?
Yep.
So your telling me Bruno and shrek are dueling in the trunk?
YEAH!😃
by HelloHelloHelloidontpaytaxes😀 September 13, 2022

this is a sexual act involving two people in the trunk of a car having intercourse while someone drives them around without knowing what's going on
by creamy maggot girl February 24, 2022

A covid era term used when one forgets their reusable bags and has to put their groceries in their vehicle loose and has a long ride home
"Damn it honey, I forgot the reusable bags. Pretty sure we are gonna have a trunk omelette by the time we get home"
by Ian Vi. December 26, 2021

Steve: I gave my gf a Slam Dunk In The Trunk last night!
Bruce: Wow you fit the whole ball in there?
Steve: Yeah I made it work.
Bruce: Wow you fit the whole ball in there?
Steve: Yeah I made it work.
by Ya boi Sero June 21, 2022

You will need two people, a car, and an unsuspecting victim. This is the act of having sexual intercouse with someone in the back seat of the car while your friend is in the trunk of the car. The friend in the trunk usually does stuff to interrupt the act such as moaning, controlling the music, or making noises. After the act is over, the friend gets of out the trunk and makes his presence known while also making the sexual partner sit in the back seat while you drive them home.
by Gorpmaster December 14, 2024
