The name of any creature that has a HUGE penis; anything named John Davidson has a massive penis.
-Bruh.. I named my duck John Davidson because he has a FUCKING HUGE penis.
-My sister dated a guy named John Davidson and apparently his dick is 40 inches FLACCID!
by Rustyflight November 10, 2019
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Former host of 80s television hit That's Incredible.

"John Davidson" has come to be synonymous with the word "incredible".
"Did you see Danny Way jump the Great Wall of China?"

"Yeah, that's so John Davidson!"
by rustymac August 16, 2005
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