1 definition by Sir Mike Offmedsinn phd (hons) esq III

A Sidey is a person who would more than definitely perform a wreckless stunt just because his mates told him to do so. Unfortunately, a Sidey is a person who does these acts, but invariably gets the timing wrong thus landing on his face, head, neck, or anywhere that could potentially break bones.
"I see Frank was trying some parkour stunts at the swimming baths the other day?"

"Yeah, he was pulling a Sidey and broke his foot...again!"
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