“Did you have to be so graphic?” – Marge Simpson
“It’s okay, Marge.  They pave the way for this kind of filth in school.” – Homer Simpson

[Update: The image is an animated .gif, the better, I thought, to capture Homer’s hilarious little motility dance.  But it doesn’t seem to be playing on the default page, at least not in Chrome or Firefox.  Clicking though, however, does seem to make it play.]