A person, usually male, who acts like a douchebag in a manner that comes, not from confidence, but obvious over-compensation for low self-esteem.
"Joe is telling everybody about his hot long-distance girlfriend from Canada again - what a shitmidget."
by Mister Satyr October 28, 2008
n. A small child.
Wow, I never want to have shitmidgets of my own!
by inthecorridor September 04, 2009