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Twenty dollars worth of cocaine.
Lets pick up a couple twompers and hit the bars.
by Danny Boy Ash March 14, 2010
What seriously stupid people call twenty dollars worth of weed. Some not quite so retarded synonyms would be, a dub, dub sack, twenty sack, etc.
David: Lemme get a twomper yo!
Jon: No, you're a fag.
David: Seriously, hook it up.
Jon: No seriously, you're a douchebag.
by Jon293i14i129 September 11, 2007