Top Definition
It's a device to measure how many wanks you are doing to the hour.
"Oy! You filthy little pervert! You were doing at least 40, and this is a built up area!"

"Sorry officer, I think my wankometer must be broken."

"OK sir put that throbbing red rod back in your trousers and we'll say no more about it."
by TommyTosspot April 11, 2009

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