
with underground TREE people
from the dawn of time.
The Big Bang Theory Season 9, Episode 21

under the TREE is
a little puppy
The Big Bang Theory Season 5, Episode 4

The only TREE bark I know
that humans consume is cinnamon.
The Big Bang Theory Season 4, Episode 3

I take it you don't wanna
help us trim the TREE?
The Big Bang Theory Season 3, Episode 11

Not until he stops humping his way
up my family TREE.
The Big Bang Theory Season 8, Episode 8