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1.
:: a counterfeit twenty dollar bill
:: a twenty dollar bill that was used for drugs, guns, hoes, or anything illegal.
"slide down the pole for the dirty dub"
by Badonkadej July 26, 2006
38 18
 
2.
a term used for skangers outside of Ireland.
What bunch of dirty dubs!
by kelp April 18, 2003
1 11