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When one man's penis looks identical to another man's penis. They are cockelgängers.
"I've seen this cock before" Jenny thought as she sucked the cocklegänger of her ex.

Daniel was pissing in the urinal when he noticed the man next to him had a cock that looked just like his?! "Wow" thought daniel, "my very own cockelgänger!"
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by rapunzabel April 25, 2017
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An individual whose cock is identical to another individual's cock. So much so that photographs may not reveal the differences.
Dude, last night we sent a pic of my junk to B's girl as a joke. She didn't know it wasn't his! Either she was hammered or I am his cockelgänger!
by WampaOne January 29, 2012
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