wannabe police officers that patrol the forest preserves of large cities. also known as park rangers. they usually have nothing to do with their time so they mostly wander trails, looking for harmless potheads and underage drinking parties within the forest.
"Yo bro were you at that wild kegger at the Hidden Hill this weekend?"
"Ya man, but right when i got there the tree police drove up on ATV's and chased everybody out".