look up any word, like fleek:
 
2.
UAD
Acronym for Uncontrollable Appetite Disorder. A disorder associated with very large people.
Mr. Allen has a UAD, we really should respect his disorder.
by Captain Duder July 09, 2009
 
1.
UAD
Ugly Ass Dude
Look at that UAD.
What's an UAD?
Ugly Ass Dude.
by aloe2oeld January 16, 2012