i was thinking about this, and while i still don't get what is particularly offensive about someone firing bottle rockets from their intergluteal cleft, i suspect what jeph thought was creepy was not so much the comic it's self, as it was the idea of marking his birthday with such a comic. it is conceivable that someone (particularly someone unfamiliar with the yelling bird character) might read it as a sort of 'gift to himself' and infer that jeph actually rather enjoys the idea. to such a person, jeph might very likely appear to be a creepy motherfucker.
if he had used it to denote any other special event, this might not have been a concern.
