look up any word, like cleveland steamer:
 
1.
Uugly (pronounced-You-gly) means double ugly.
Man, that chick ain't just ugly, Shes Uugly.
by Vdubbs March 21, 2008
 
2.
A person place or thing so ugly that an additional u must be inserted into ugly to do the person place or thing justice
Marzipan is one Uugly cartoon character. She looks like a broom with a dress.
by SexBomb August 13, 2003
 
3.
I think the extra U emphasizes the insertion of the word "You" as in You Ugly.
A perfect example can be found in Flick - Wild Cats.

"U-G-L-Y...you ain't got no alibi Uugly, Uugly...yo mama say Uugly"
by D. Ferrel September 24, 2003
 
4.
Another word for whats up or what it do. Started in central Cali by a couple a half breed Outa Bakersfield.
Ah U UGLY Nigga What U Been Up 2.
by Wataboy September 14, 2007