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When someone fills their butthole full of air and then they slap somebody with it and let out a poo.
My boyfriend decided to try a new move on me called a whoopi slap. It was so gross.
by Benny G East January 13, 2011
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Jul 13 Word of the Day
a phrase chiefly used in northern England.

it is a contracted form of "it'll be reet", where "reet" means "alright" or "OK".

living your life according to "be reet" is the only way to find happiness in life.
Geoff: "ZOMFG a just hopped off the buz n me 'ouse is burnin' down n me Deirdre's in there dyin!"
Jack: "Be reet."
by Tommmmmmmmmmmmm May 06, 2007
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2
Where you fill your ass with a bunch of air, then slap your freind releasing what is a so called "Whoopie Slap" or a massive fart.
by Liwty:) January 10, 2011
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