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1.
Began after a competition to fling a shoe off of one's foot and hit one of those things little kids ride on that bounce around, shaped like a rhino.

Used to commend someone on a continued good effort; when one wants to attain a certain goal or task. Especially an extremely difficult one.
Jimmy: "Hey Maxwell, I've studied three hours for the Exam!"
Maxwell: "That's great Jimmy, go for the Rhino!"
by Rob June 23, 2004