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Mindlessly defending, laughing at or admiring a person, typically someone of a celebration status.

Similar to how a treehugger defends trees even though the tree would not defend the treehugger.
My friend is always tree trunking Charles Barkley. He laughs at everything he says. Now that Shaq is also on the show, he can take turns swinging from their branches.
by blkbam January 05, 2012
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Term used when a man with a huge penis rags a women hard.
Joey- Did you bed Kelly last nite
Pete- Yeah man i gave the biggest tree trunking you have ever seen. In the face!
by Joel Rice March 08, 2006
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