YIWU, China — Some situations can be confusing. For example, trying to convert miles to kilometers in a foreign country usually results in a jumble of incorrect numbers. Same for converting dollars to the local currency.

Or imagine you're on a flight to a foreign country and the flight attendants pass out customs and tourist documents that must be filled out prior to arrival. Those little pieces of paper have the power to fry your brain and cause you to forget simple details like your home address, or the date that you'll be departing.

Watching this video reminded me of another common situation that can be added to the list — understanding which doors are going to open on an elevator.

Does this seem familiar? You get into an elevator that has doors on both the front and back. After pushing the button for your desired floor, you then hover in the middle, unsure whether doors will open in front of you or behind you.

At least you're aware there are options.

The poor fellow in this clip was completely clueless as the door opened and closed behind him every time he pushed the door open button. It was only when another rider entered the elevator (and scared him half to death) that he realized his error and slinked out of the elevator in shame.

Let this be a reminder to all of us so we can avoid a similar fate.

Have you seen this?

We're gonna need a bigger ice scraper

Parking your car outside during the winter months often results in a thick layer of snow in the morning. If you're in a hurry, you might just try to quickly swipe the snow off your windshield with your arm.

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