hit the trees

To smoke pot (probably comes from the resemblance of buds to trees).

I hit the trees harder than Sonny Bono.

Hitting The Tree

A euphemism for getting high.

"Excuse me while I go hit the tree bro."

"Andy looks fucked. Was he Hitting The Tree again?"

hit the shade tree

Usually means you're fired from your job.

Joe: Sorry I'm late again, I had a flat tire.
BossMan: Hit the shade tree!!!!!
Joe: "sits under tree"

Hit by a Tree scenario

A scenario, usually brought up at work, in which a tree falls ontop of you the next day.

Usually this is brought up to force you to document your work, so others can continue/finish it if something would happen to you, whether this is you actually dying or you getting replaced by someone cheaper.

Alice: "I just pushed IEEE 802.11mc to the main repo, there is still a lot of work to do."
Bob: "Don't forget the hit by a Tree scenario"