A woman has left people in stitches after posting a video to show an extremely awkward interaction with a pizza delivery driver because she "didn't know how it worked". There's a few lessons in life that you're never taught, but instead the world just leaves you to it and expects you to pick it up along the way by observing others. One of those is the delicious task of ordering a fresh pizza directly to your door, but it's one that you might want to sit your children down and explain how it works after one customer's mistake went viral....