Huge penis that can be mistaken for a tree, the kind of thing you see in modern porn. A penis so big you wonder how any mortal woman can take it.
by alfalfa31 July 28, 2009
A tree that is shaped like a penis. Usually on a slight slope or hill with a curve at the base, giving the image of a treerection.
See also: cuntree
See also: cuntree
by Drewboy64 August 06, 2007
Ok this is one my friends made up. A treenis is a drawing of a penis with leaves at the top so fags and parents won't think that it's a penis, instead they think it's a tree!
Guy one: (drawing a penis on my friends shirt) LOOK A PENIS!
My friend: MY MOM'LL KILL ME IF SHE SEES THAT! i won't be able to wear that shirt!
Guy 1: No problem! (draws leaves at the top to make it look like a coconut tree) IT'S A TREENIS!
My friend: MY MOM'LL KILL ME IF SHE SEES THAT! i won't be able to wear that shirt!
Guy 1: No problem! (draws leaves at the top to make it look like a coconut tree) IT'S A TREENIS!
by Desiree A. December 15, 2005
by goose13 August 21, 2006
Can mean anything you want it to. It can be used to replace words that you would get in trouble for.
by Mr. Shazbot May 18, 2004
by Gber December 27, 2017
Billy: “Yo bro I saw a massive treenis on that redwood over there, you should totally ride that thing”
by Handle Mycock February 01, 2022