To get high, most commonly by means of marijuana. Trees is a common slang name for marijuana. When you climb a tree, you're getting higher in elevation than when you were on the ground. Therefore climbing trees refers to getting high off of trees.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

IM CLIMBING SOME TREES TONIGHT. IT WILL BE COOL TO BE RIDING WITH YOU AND TREES. CLIMBING TREES MEANS THAT YOU AND I ARE GOING TO SMOKE THAT SWEET SATIVA TOGETHER.