I work in a cinema, and I've had everything from:
"Yes, I like two tickets to see the film that's starting now."
"... [takes a wild guess] Um, Red?"
"No, no, the one with that man- hang on - [answers phone] Hello?"
"...
"
"Ok, we'd like two adults, one nineteen year old and a fifteen year old - are they adult prices; I hope not! - a senior and a five year old."
"... To see which film?"
"Oh, right, yeah, Toy Story."
"Erm, so that was two adults, and-
sorry, what was the rest?"
"[dramatic sigh]
It starts in TWO MINUTES. We're going to miss it!"
"
"
People throwing money at me, people calling me 'sweetheart' and 'love' and 'darlin', people asking me about my name (since I wear a namebadge). My favourite thing is just to smile extra-sweetly at them, though.
I also hate it when parents get me to collude with them on deceiving their children, though I can empathise on certain occasions. The woman who looked at me wide-eyed and said,
"You aren't showing G-Force this week, are you?"
And I nodded solemnly and explained to her young son that they would have to see another film instead. When she was paying, she muttered to me that she'd seen it three times and was not going to endure it again!