2 definition by John Stewardson

Top Definition
When a motorcycle shakes its head. The front forks going from lock to lock.
He got into a big tank slapper and stepped off on the high side.
by John Stewardson January 17, 2004

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When a motorcycle throws the rider off going over the handle bars.
He got into a tank slapper and went over the high side.
by John Stewardson January 17, 2004

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