There is a group of people in a circle. One person goes out of the room and the game is explained to the others. What happens is when that person comes back they will be given three chances to figure out who the MOO leader is. The MOO leader is the person who is mooing the loudest of them all (in reality there is nobody the first time). On the third try, whoever the person says moos the loudest, he is automatically right. So then somebody else goes outside (person B), and the first person becomes the MOO leader, so he actually has to moo louder than everyone else. So person B comes back in and has three chances to guess who the MOO leader is. Person B is in on it the secret the whole time, so he does not choose the person the first two times. So the first two times, the MOO leader screams really loud. The third time (Everyone is told this while he was outside the first time, that on the third time, of the second round, nobody is supposed to scream EXCEPT for the MOO leader). Everyone pretends to scream, and then it is only the MOO leader who screams the loudest of everyone. In turn he becomes embarrassed, and everyone laughs! This is one of the funniest games possible.