2 definitions by WHeeeeeey JACOB

The act of flinching at imaginary objects in supermarkets
"AAAH FUCK WHAT THE HELL IS THAT?, oh i just mcflizzied"

"So, how was your day" "WOAH! WATCH OUT"

"I almost had a heart attack i had such a bad mcflizzy earlier"
by WHeeeeeey JACOB April 1, 2010
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A McWhizzy describes the act of being unable to find a toilet and proceding to get on to a coach with a full bladder and pissing your pants all over the seat causing widespread disgust.
"Oh my god i think he's about to pull a Mcwhizzy"

"Here have an oasis bottle" "No, I'm fine, i can hold it"

"eww i had to sit next to this guy who McWhizzied all over everything for FOUR HOURS"
by WHeeeeeey JACOB April 1, 2010
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