A person who can fit an entire head in their vagina. Also used as a derogatory way of saying a woman has a loose vagina
"Yo Doug, Stacy is such a fucking muff head dude like god damn".
the act of a male cumming inside of a woman's mouth and her and another female make out thus juggling the spunk inside both of their mouths.
" I came in this Chinese chicks mouth and then she started spunk juggling with a random chick on the side of the road".