The name derives from hip hop. It may also come from resembling a thwomp from the Super Mario series. It takes this appearance when it is tightly packed into a small plastic bag and the edges become ruffled.

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Particularly: “dubious”

Alternative formsEdit


twomp ‎(plural twomps)

  1. (US, slang, neologism) 20 U.S. dollars' worth of marijuana.
  2. (US, slang) Twenty.
    • 1999 April 7, Edmund Lee, “uop's banquet”,, Usenet:
      it's only gonna cost a twomp, right? hella cheap.


  • Tom Gally, twomp, according to Berkeley High School Slang Dictionary, North Atlantic Books, quoted Feb. 2004.