Friday chuckle: Venn diagram humor

Today BoingBoing linked to a collection of Venn and other relational diagrams drawn on index cards -- they're posted on a blog called Indexed by Jessica Hagy.

Two of my favorites, probably because they strike close to home... "Those silly 1980s" which plots the growth of the hole in the ozone layer against the desired height of bangs, and "As the tenth bullet states" which plots the number of PowerPoint slides against the number of sleeping audience members.