whatrock?
© 2002 Jamie Zawinski <jwz@jwz.org>

If you're in the Bay Area and you see a billboard for some radio station with a picture of Mick Jagger (or maybe some equivalent dinosaur) on it, pay close attention to the fact that due to their poor choice of a non-dropshadowed font (making some letters blend into the background) it appears to be captioned "ASS ROCK".

(Apologies for not having a photo of this gem.)