AH! My sister-in-law's cat, Echo, will smack you if you offend her (usually by picking her up). She won't use claws, but she'll give you that "I'm gonna smack you!" look, and if you don't comply to her wishes, she'll reach up one of her paws and slap your cheek.
I've pissed her off on purpose because it amuses me to get smacked by a cat.