When you masturbate so furiously your penis turns red, or even blue.
I beat the fuck out of my dick so god damn hard I got a lobster cock.
when a man's dong is so fucking big and steamy that you cant even fit it down your gullet, sometimes it actually looks like a freshly cooked lobster.
ex: dude, remember Burcham, the maid from Jessie? he had a lobster cock!