Shirtyonerd. 

name of geeky computer nerdz gang

Shirtyonerd. by cracker jack April 26, 2003

Shirtyonerd. 

A person who wears a shirt on his head in an attempt to be all gangsta.

Yo, perf, you is such a shirt-nerd Yo!

Shirtyonerd. by Slim Jim Bean McGruff April 24, 2003