A DUB is an acronym for an ugly friend that a hot girl would bring with her in order to make the hot girl look hotter by comparison. DUB stands for Designated Ugly Bitch. A DUB is the same thing as a 'grenade', as the people from the Jersey Shore would say.
by chinaman93 May 17, 2011
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by binggurl92' July 02, 2009
When rappers record and after there verse they record the key words in there verse twice to make the words come out more
by Swift spits April 21, 2012
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by Dirty Den October 13, 2003