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1. A person from St. Gregory College Preparatory School (Tucson, Arizona) who is random
2. Any person who is too random to explain
3. Any person that one finds annoying
4. A person you dislike greatly
"How your boyfriend doing?"
in response,
"He is being such a St. Greg Randy! He won't even call me back!"

When referring to a cyclist in the middle of the road
"What a St. Greg Randy!!!!!!!"
by Dr. Randal April 23, 2009
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