The Sims Tips

Miserable Clown
If you get the misery clown into your family, get the clown painting and hang it over a fire place. Keep making somebody light a fire beneath it, until the carpet catches fire. The paintng will burn, and the clown with it.

One of the ways to avoid getting the clown in the first place, is to not get the clown painting, as this will lower the family's happiness.