1 definition by TigerBeard
A Milk-man challenge is when a group of guys lay in a circle and perform oral sex on each other. The winner is the first man to ejaculate, meaning he is the only one who does not end up with semen in his mouth. The rest of the group must carry on until there is only one left. He is declared the Milk-man.
by TigerBeard March 10, 2015