A couple of folks have written to ask about this morning's B.C. strip with one character turning into another for no visible reason. (I may not recall the players' names accurately but I think that's Peter in the role of I.R.S. agent…and then the other guy is B.C. in the first panel and Clumsy Carp in the second.)
No, I don't get the switcheroo, either. It looks to me like a mistake…or maybe Johnny Hart did it deliberately to see if anyone would notice. At least three people who read my site did.