Top Definition
To skip a scheduled event by driving to the event, and sleeping in the trunk of a vehicle. Usually occurs with a sleeping bag and pillow.
Dude i haven't seen Meesh in school today, have you?

--No he is in the parking lot being a trunkbum for the day, he said he was tired.
by GeneralJesus October 22, 2008
5 Words related to Trunkbum

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