I was walking to the train station once when a guy said "do you want to buy this?" and showed me a flick knife.

"No, I'm alright thanks" I said and carried on walking, and he went his own way.

It was only later that I realised that was a really odd question to ask, and I might not have heard him properly. I did have headphones in at the time and there was traffic. Plus I'm slightly deaf anyway.

There's probably some crackhead out there still wandering how he got Derren Browned out of mugging someone.