"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!"
A cock doppelgänger. Similar to a stunt dick. A cock that looks eerily similar to yours, especially for use in a MFM, where the F would be able to live the fantasy of having two of her SO simultaneously.
in theory if you touched with one of your infinite possible cockeldangers you would both implode in what could only be described as the wonderful orgasm unimaginable and at the exact same time the both of you would no longer exist.