If You Are Afraid of Clowns, Do Not Watch This Video of 700 Mexican Clowns Laughing Maureen O'Connor · 10/22/10 11:27AM At a clown convention in Mexico City, 700 clowns attempted to break the world record for laughter. They failed, probably because they turned and looked at each other, and the hellish scene of 700 cackling clowns scared them into silence.