Why did you get your postal code on your leg?

It was my first tattoo! I was doing a trip and I went to see my best mate and I asked him: “What should I get?” and he said: “Get 6530 on your left leg and I will get it on my right leg”. We booked it we went out, we got really drunk and he spent all his money. The next day he didn’t rock up and I did, so I got it and he didn’t. Later on, I was backpacking around the States and I used to write “If lost, return to___” and then, I would write the address in my arm, then I would go to a taxi driver and “Say take me there” after a night out. So then, I decided to get “if lost return to” around the postcode.