Warning: Another rant about my workplace coming up.
Ugh, some customers.

If the front doors are left unlocked for whatever reason before store hours, (there could be many reasons for this, one being an employee stepped outside on a break and the doors only lock from the inside unless you have a key, a customer from the vet clinic, groom salon or boarding kennel let themselves out, and we simply don't have the personel or hours to have someone man the doors at all times until the store is open), some people will barge their way in even though we're not open. Sometimes a whole two hours before we open. Despite all the pallets, boxes, and trash all over the floor, no one in uniform and the stereo system blasting music from one of the employees iPods, they think we should be open, and might even have the nerve to say something like "Your front doors are broken, they won't open", and "You have plenty of people here, I don't see why you can't open an hour (or two) earlier." And even though we're not in the right mindset yet to offer customer service, they insist on us stopping what we're doing and giving them the grand tour of the store and everything we carry. And then, after we open, another customer will stop us from what we're doing so we can help them and might actually say something like "I'd think you'd have all that stuff done before you open so you'll be more availible for us customers". What really ticks me off is when they both happen in the same day.
/rant