1 definition by Aaron Tye & Nate Burgan

A Stu is a boy and/or a man who is ugly and/or totally undeserving and/or unappreciative of his super cool and usually extremely attrative girlfriend who could do better.
Also see"Sue"
"Dude, what the hell does she see in that guy, he such a Stu!"
by Aaron Tye & Nate Burgan September 5, 2006