Noino on when you read no onion upside down
Customer: what does noino on mean?

Employee : *turns box around* no onion.
by Noino on July 29, 2017
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Being highly addicted to sniffing babies and potentially a weirdo

If a person is a noino stay away from them
Girl: he’s such a noino
Boy: ew gross
by World Crack Book November 2, 2022
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It's Onion-Rot Backwards.

Can be used as hilarious expletive shouted out in anger or in triumph.
A. "Honey, We're Preggers."

B. "TOR NOINO!!"
by Dong Butts February 6, 2010
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