1 definition by Hartivarbari

Top Definition
When giving her the business from behind, when she reaches back and gives the boys a tickle.
I was trying to think about baseball, but once she gave me that Humdinger, it was all over.

Her nails were good for back scratching, but the real joy was when she used em for a good old fashioned Humdinger.
by Hartivarbari May 17, 2010

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