phat cobra Share definition Flag 9 foot by 3 foot dick. Best compliment a man can get when their dick gets tagged as the phat cobra. Zach: Phat Cobra is the man not only do i want to party with him, for some reason my mom does too, but i don't know why. phat cobra by phat cobra 93 November 7, 2007 0 0 Get merch Get the phat cobra mug. Buy Now — $32.95 See more merch