Idiocy is like hypnosis or ejaculation: if you want it, you can’t have it–and if you don’t want it, you can

Since Seeing "The Idiots" have had the following as my msn tag:-

"Idiocy is like hypnosis or ejaculation: if you want it, you can’t have it–and if you don’t want it, you can"

which is a quote from an interveiw the director gave.