Idiots who get in stores and leave toys, clothes etc. on the floor. I understand that they have people hired to pick the stuff up, but they should at least be considerate.
Umm for the record the store employees were not hired to pick up after idiots, they just have no choice because the majority of customers are inconsiderate. which I do have a whole list of things idiot customers do to grind my gears. (Yes I work in retail) I will only post a few though.
Customers who interrupt you when you are obviously helping another customer.
Customers who ask for help when your arms are full of stock and get angry when you say you will be with them as soon as you put the stuff down.
Customers who are too lazy to add their own minutes to their 'pre-paid' phones.
Customers who open packages before they purchase them, and especially those who open packages and then leave them behind but purchase an unopened item of the same thing.
Customers who talk on their phones and not pay attention when at the cash register.
Customers that yell at the employee about things that employees have no control over whatsoever.
Customers who expect a refund or an exchange for something that is obviously a couple of years old.
Customers who cant put things back where they got them, even if that spot is right in front of them.
And the worse, Customers who let their kids run wild.