What does U.U mean?
Expressing sympathy
Other definitions of U.U:
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How to use the term U.U:
There are no example uses of U.U at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

ETB,ETR,MAMHWAW
Early to bed, early to rise, makes a man healthy, wealthy and wise

JSUN
Just so you know

KOOLS
Mentholated cigarettes

:'(
Crying