Monster cock? what is that?

Just wondering why people gave that nick name for they're cock as a monster cock ? first of all I never seeing a monster and not even a cock that looks a like a monster but my old teacher in a high school his is a dick and looks a like a monster.

Not sure, Father Guido Sarducci.

Mine is pretty big, but I would never refer to it as a monster.

Maybe you shoulda aska some-a monsters.

(I know, I'm going to hell.)