Someone else's bonzai tree

Especially relevant in big companies. When you develop an intricate, sought after skill set, but never rise to the level that was possible from your early potential, that may have been/still could be achievable elsewhere.

Zach has a PhD from an ivy league college, and has built enviable experience, but has never risen above director level in the blue chip company he works for. He's become little more than someone else's bonzai tree, and should probably leave, in order to become a red wood.

Tree Society

In some high schools and colleges, a relatively large club or group of people who get together underneath campus trees in grassy areas and just talk. Members are often students with emotional or societal problems who get their feelings out with people who listen, much like a therapy session, except in a much more relaxed manner. Many times, conversations vary from these to much more random topics, and some societies have been known to have drug-high clubs inside of these, continuing with the so-called "healing," but this isn't too common.

"Loomis' Tree Society rep was yelling at everybody to join... I think it's supposed to be fun or something."

Expanding family tree

The act of generations having offspring repeatedly

"You know honey you telling our daughter that all she needs her daddy or dad is Kind of bad. Because She would have to keep expanding family tree at some point. If it's in her 20s or what cus she like 19 now you know?"

Pee Flow Tree

The process of deciding whether or not to go to the bathroom in the middle of the night.

I really have to pee. But I don’t want to get out of bed. I wonder if I can make it through the night without having an accident? Is it really that bad to have an accident? No one will know. I probably need to change the sheets anyway. Maybe I should just go ahead and get up to pee now since I’m awake after going through this pee flow tree.

Tree Simulator

An apparentlty very relaxing game that as you keep playing becomes increasingly more stressful

"That game is just a tree simulator"

Kentucky Shade Tree

When a male individual neatly rests each testicle over each closed eye socket of a fellow individual, (male or female), hence shading the eyes like a Kentucky Shade Tree.

They were sleeping so I gave them a Kentucky Shade Tree to keep the sun out of their eyes.

tighter than bark on a tree

This phrase can describe many people we have the pleasure of knowing and have to deal with on a daily basis;
Such as, stingy ass pricks who wouldn't loan you a dollar to save your life AND EVEN IF THEY DID... there would be 70% interest.
Aswell as "no bullshit" parents who force their kids (and other people's kids) to act like good fucking Catholic school boys with consequences of "a knuckle sandwich" and or "tanning your hide" in tandem with threats like "If you keep it up like this, you won't be able to sit for a week!" or " You'd better watch your smart mouth buster!"

"Damn Daniel, your dad is tighter than bark on a tree!"

"You don't even know the half of it, Billy."