Fw: Fw: Fw: I Don't Care!

I have an email offender in my address book. Everyday I can count on getting at least two or three useless "“joke"” emails. Fortunately, Gmail allows me to create some pretty sophisticated filters to channel these emails automatically into a junk folder. I rarely have any make it into my inbox anymore, but when they do, it'’s just that much more annoying.

My dilemma is this. How do I politely tell the offender to cut it out, with out looking like an anti-social snob?