Fat jokes

I'm sorry to say, that I can't think anyone has ever really thrown a
novel fat insult at me. Every one I've known to be directed at me, I'd
already heard on the TV or at someone else.
Has anyone ever insulted you with a fat joke that made you laugh? I've
been insulted plenty of times about other things that I found amusing,
but it seems anti-fat humour tends to be largely witless. Sure, some
comedians have done a good job (and John Prescott, our deputy prime
minister, has given them pleanty of reason to be a target for all
manner of jokes). Someone please prove me wrong.