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2.
1. (noun); one who is attracted to trees in setead of people - also see natosexual
2. (adj); wanting to protect nature so much that they will go to all extremes to protect it
3. (vrb); tree-hump: to hump a tree, but more likely just as a joke.
1. "Hey look at that chick, she's hot."
"I dunno."
"Are you gay?"
"No."
"Well you must be a tree-humper."

2. "I'm gonna pick that leaf off the tree."
"Hey, no! That's bad for the tree."
"It's only one leaf."
"But still! It could damage the tree in ways you couldn't possibly imagine!"
"Don't be a tree-humper."

3. "Hey guys. Look at this! I'm a tree-humper."
*humps tree*
"Hahaha! Very funny!"
by Kamikaze Watermelon December 05, 2008
 
1.
1. An over enthusiastic enviormentalist. The nature equivalent of a PETA member.
2. A person who refuses to leave their sitting spot near, under, or by a tree of some kind.
1. "WHAT DO YOU MEAN I'M A TREE HUMPER?! JUST SET THE PAPER DOWN AND NOBODY GETS HURT!"
2. "Guys, I don't to go downtown...I'm fine here! -is dragged away from tree-"
by Angelxa July 10, 2006