I once made grant download a horrible, horribile picture. Since then, he hasn't quite been right.
I helped a friend with his laptop that was sick. While he was out of the room I changed his little windows avatar thing to be this naked gay guy holding his erect stuff. and named his computer anal-ram. and whatever else I could come up with in the 4 minutes he was gone. Took everything I had to keep a straight face until I left. He called me about an hour later. I was in tears laughing. I dunno why that reminded me of that.