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1.
The Joshua Tree is a gathering of male individuals who get together and take drugs to discuss existential philosophical questions and other topics. It is usually, but not always, occurs in the great outdoors.

The term originates from Entourage S05E05 "Tree Trippers", when actor Vincent Chase and friends go to Joshua Tree National Park to eat shrooms and figure out if he should take the part in the movie Benji.
Guys, we need to figure out the meaning of the universe! Joshua Tree here we come!

I'm at a loss about whether or not to quit my job, how about about Joshua Tree?

Dude, wanna go to the Joshua Tree? I hear Archimedes and Nicodemus are gonna be there!

Let's just get fucked up at the Joshua Tree tonight!
by foehammer88 November 16, 2010