On some level, these books are really creepy. lol
They're funny, but they're subtle. In fact they're so subtle that I don't think my kids get it. At all.
Now don't get me wrong, I know my kids smart. My kids are too smart for their own good.
But even smart kids miss subtle.
My husband thinks this one is actually less creepy than I Want My Hat Back... and he's probably right. :)
Overall, I think these are probably better for older kids that will get it and not find it scary...
(Again, from the phantom pinterest thing about picture books...)