Gnome-Girl has a great list of T-shirt (or may I suggest bumper sticker) slogans. I particularly enjoyed "You... off my planet" and "Is it time for your medication... or mine?"
And I'm watching the Screen Savers repeat from last night. I couldn't find the link in the show notes, but at the end they were talking about nasty spam software. They were making fun of the "warning" on the software's site that said they weren't responsible if you used their software for spaming. (yeah, OK, whatever) Then Patrick made me laugh. He said "Remember, spam doesn't spam people. People spam people." OK, it sounds kinda lame when I write it down, but I was laughing.