Eating mushrooms and going to the zoo. The term is a portmanteau of "zoo booming, my fool"
Human: "What should we do this weekend?"

Psychonaut: "Zooboomafoo!"
by Boss Nast October 9, 2011
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a person who has a sister, that is extremily hot and everyone wants to bang in the ass!!!
by steamin beamin February 26, 2004
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