A word that is used by very young children to describe a wanker or a looser, a real jerk. Often shortened to stemy
Your brother is a real stemhead
by Peter Forde March 13, 2004
Get the stemheadmug. Look at that idiotic stemhead
by Gregg Mackrides October 13, 2003
Get the stemheadmug. by binklebeans August 28, 2005
Get the stem or stemheadmug.