Basically cocks that aren't strictly made of... cock tissue? Metacocks, more or less.
I searched the forums but as you can tell, literally didn't know what this would even be called but I know when I see it. Basically characters, esp. shapeshifters which have cocks made of whatever substance they are made of, or similar situations. Things that are for all intents and purposes, de facto cocks but may not actually be properly cocks, for instance, tentacle cocks would count, cocks made of smoke or mist or, or incorporeal substances such as ectoplasm or cocks which only exist in the mind of the perciever, such as cocks that are illusions or hallucinations caused by hypnosis or drugs or mind control of some kind.
Basically
What would be the word for Anatomy Purist (A cock is a sexual organ, attached at the waist) but Structure Radical (A cock can be made of any substance) cocks.
And for good measure, I will say cock one more time before ending this post, cock.