Humptree Share definition Flag Insult refering to young males who are often prone to passionate affairs with the letter P. Often moody or giddy. Likes to pretend to be a real man. You are such a Humptree matt!! Man up Humptree. Put the P down and step away from the gay. Humptree by Wee Jockey Campbell. April 12, 2008 0 0 Get merch