Family Circus: See! Mommy's birthday's in March and Daddy's is in October, so Mommy's OLDER!

I'm not really sure what insane method of timekeeping Dolly's trying to trick Jeffy into following, but it seems cleverly designed to humiliate both her idiot brother and her constantly angry mother. Jeffy does, however, seem to be either confused or skeptical, so she might want to try something a bit less convoluted.