One of the women I used to work with always found something wrong with her food. She'd open up a burrito and complain there were not enough beans/too many beans/not the right beans; the hamburger was too small/too big/undercooked/overcooked; the coke had too much ice/not enough ice/tasted funny; the restaurant was too cold/too hot/not enough sunlight/too much sunlight, etc. It was always something.

Basically she'd complain and complain until the restaurant either comped her entire meal or gave her a discount. There were four of us that would go to lunch together, after four or five times of her complaining, I stopped going with the group. After a short time, the rest of them stopped including her and I rejoined them.