I had an idiot who, when we were all ABSOLUTELY swamped at the tills, popped up like a gopher from somewhere in the chaos and said, "I only have one item! Can you just take me while you're waiting?"
Fuck and no. I was in the middle of a transaction and shit was coming up that I couldn't do anything to speed up.
So no - wait your turn like all the other grown-ups, dickhead!