Top Definition
Originated in the early 2000's, Bum Jum was a show of stupidity, and stuff. Bum Jumish is a word to define anything remotly stupid or in any way related to Bum Jum or Starbucks.
That dude is so Bum Jumish/this coffee is so Bum Jumish
by Cat House Productions May 31, 2004

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