A Muddy Moose is a move performed during sexual intercourse. This clever move, requires two males and a female engaging in anal sex. Both men perform anal sex as the female proceeds to violently explode excrete all over the two males penis'. When the action is done they hold their penis' over her headed, like antlers, as they all scream "Muddy Moose!".
Ross and Ben hold their dicks high above Cedies head as a deafening Muddy Moose roar travels through the hallway.