Mmmm, let's see....
The morons at my daughters' colleges or possible colleges who keep losing documents like transcripts, FAFSA reports, SAT scores, you get the idea...
The buttbrained sister-in-law...
People who like to cause trouble for innocent folks, like us good guys on GC

...
Parents who raise their kids really liberally so that the kids of more conservative families like ours frequently and vocally wish for parents that'll let them stay out all night at age 15 or make F's if they want--we know we'll have the last laughs on these parents, but still...