Top Definition
The process of licking a cheerio (cereal) and sticking them to the face of someone sleeping. It can also be done by crushing the cheerios into a powder, wetting the sleeping persons face, and sprinkling the powder on to it.
Guy 1: hey lets cheerio jon
Guy 2: ya sure, cheerioing is so much fun
by RedJoe 55 December 10, 2011

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