At some point in a lot of people's lives, probably in your teens or early twenties, you might have worked as a cashier in a restaurant or a retail store. Here are 10 signs you worked as a cashier through the good and the ugly.

1. You'll never complain to the cashier how much an item costs.

Having experienced it yourself, you'll never complain to the cashier at the grocery store check out about how the Special K cereal you buy every week has gone up in price. Do people not realize that the cashier doesn't assign the prices to items? Sometimes not even the individual stores assigns the prices, a lot of the time it's the company itself.

2. You refrain from entering a store two minutes before closing.

This goes along with the reason below this, but the employees clean up and get ready to close so that they can close on time. You refrain from coming in right before closing unless it's an emergency simply because you understand the feeling of wanting to go home when your shift is over. For customers that come in so close to closing, it usually means that the staff have to reopen the cash register and bring out things they've already put away for the day. Not to mention, they have to rush you to get whatever you're going to get.

3. You clean up after yourself the best you can.

Having dealt with this yourself, you'll never go into a store and make a huge mess, and then proceed to walk away from it. From wiping your feet at the door to picking up that bag of chips that fell off of the shelf because you picked up the bag in front of it, you know to keep the store clean out of respect.

4. You know what you want or what questions you're going to ask when you approach the counter.

Nothing is worse than having a customer who is not ready to order or check out approach your counter when you're having a rush pour in. There are about five people behind them, and they rushed to get to the counter before them, then they aren't ready to go. Cashiers know from experience to know what you want before you approach them, otherwise you're causing a lot of back up and frustration on the cashier and other customers parts.

5. You get off your damn cell phone when checking out.

I think this one is pretty self explanatory. Don't come to check out on your phone and tell the cashier to "hold on" while you talk to your sister about how that chick at work has been giving you the stink eye all week.

6. You put the money in the cashier's hand, rather than on the counter.

Before working as a cashier, I thought this one was common sense and respect, but I guess people think otherwise. As a cashier, you know to always put the money in the customer's hand, especially if they are holding their hand out. Why else would they be holding out their hand? Let me give you a hint, it's not because they want to shake your hand.

7. You hand the cashier ALL of your payment at one time.

Nothing is more confusing than having to figure out how much money to give the customer when the cash register is telling you one thing and the customer hands you more money or change. Just don't do it.

8. You always pay attention to your surroundings and listen to what the cashier is saying.

As a cashier, you have to ask a lot of questions, and give information pertaining what you, as the customer, has to do regarding payment. Sometimes, though, the customer ignores what you're saying and then proceeds to ask you what you had previously told them before. You tell them to swipe their card and they use the chip reader and then ask why it isn't working. You ask them plastic or paper, and they get upset when you choose for them because they didn't answer. Please, pay attention to the cashier when you are at the check out.