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Refers to the sounds trunks make when they have subs in them, as if Jackie Chan is in the trunk doing karate inside. Came from the Young Dro song "Man In The Trunk".
"That bass is bumpin'...what you got in the trunk?"

"Jackie Chan in the trunk!"
by Chrisssssss October 18, 2006

Words related to Jackie Chan in the trunk

bass subwoofers trunk young dro