1 definition by Ben2403

Top Definition
1. Nonsense; Gibberish; Makes no sense

2. A lie

3. A British youtuber that does mostly minecraft videos
You don't really believe all that mumbo jumbo, do you?

I can't believe all these people just talking mumbo jumbo.

Hey look, Mumbo Jumbo just uploaded another video!
by Ben2403 October 23, 2015

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