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1. When trees (or any plant for that matter) shake pollen everywhere in spring. Treegasm.
2. The pollen that results from trees shaking or from having a treegasm.
2. Having sex in trees.
1. Guy: Dude, I don't want to go outside, there's a bunch of tree sex going down and I have allergies.
Dude: I thought that was herpes!

2. Guy: Aww, Dude! I got tree sex in my eyes!
Dude: I thought that was herpes!

3. Guy: Dude, I totally had tree sex with Gal last night!
Dude: Guy, she has herpes!
by Guy Diddley April 15, 2006
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The act of having sex in a trees. Prevents pregnancy in most cases.
Maybell was very happy when the pregnancy test came out negative after having tree sex with her boyfriend.
by Animals in suits March 30, 2010
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