First of all, the expression is “Back in my day” not “Back in the day”. I hope this doesn’t shock you but your day was not the day, it was simply your day, you daft, narcissistic prat. And another thing: you’re 30 years old, for crying out loud. When I was a kid – back in the day – this expression was reserved for old-timers who had played trombone in the army band during The Great War (that’s World War I to you), not thirty-something, energy-drink swilling posers. It was for men who bet on horses, travelled on coal trains and whose idea of casual wear was army-beige khakis, not factory-shredded jeans and an Ed Hardy tank top.