Top Definition
ULB
acronym for 'ultimate lax bro'
that dude has achieved helmet lettuce flowfection, and he's rockin a sweet lax pinnie. he is a ULB.
by nmrb April 27, 2010
1 more definition
ulb
ugly little bitch
ew she goes out with him she's such a ulb
by biancaaa- October 04, 2008

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