Muk Head Share definition Flag When you get a hickey on only the head of your penis, making look like the pokemon Muk. Dude, the secretary at my office gave me the best Muk Head I've ever, the other day. Muk Head by NoahHacksaw December 24, 2007 0 0 Get merch Get the Muk Head mug. Buy Now — $32.95 See more merch