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

IASA
I Am So Annoyed

TFA
The Fucking Article

AGH
Ain't Gonna Happen

YQ
I Like You