Or light his pants on fire. That will entertain the kids more than the stupid balloon animals he makes. There is also the fear factor. Look at a clown. Dissect his face.
Clowns are just a bunch of men wearing makup.
These men couldn't get real jobs in the entertainment industry so they are clowns. There are off-chutes of the clown family that include such monstrosities as mimes. These mimes are a little better than clowns, only because they can't speak. At a party or on the street where there is a mime, try to get him or her to talk. Go to any means necessary.