I went to the liquor store last night to pick up some wine for Thanksgiving. I was feeling punchy. I'd had a tough day.
Liquor store clerk: Can I see some ID?
Me: Don't worry, I'm old.
LSC: You look young enough to me.
Me: Was it the enormous pimple on my face that made you think that?! (It's true; I have an enormous pimple on my face).
LSC: (rightly so) ????WTF??
Poor little dude. He never knew I was just yanking his chain, but I had a good laugh.