I don't know how he does it, but Chris Dunham consistently comes up with funny stuff relating to genealogy at his The Genealogue blog. I read it every day in the evening and often laugh at loud.
Chris has a wealth of material on his site. Click on the "Exclusives" and "A Few Favorites" links at the top of his page to see the goodies.
My all-time favorite remains Genealogisms. I'm a word nut anyway... here's one of the best:
Kleptonamiac - One who steals names from another's genealogy database to add to his own.
You get the idea - change a real word to reflect a genealogy reality. Go see them all.