What's the funniest cuss, swear, bad words?

Are you from Warrington? That's the only place I've heard that delightful exclamation used.

I like "dickhead". It's simple and effective, and you can say it with pity, rather than anger.

I'm not from Warrington unfortunately (or fortunately as the case may be).. I think I heard it in a film, possibly Shaun of the Dead as well