I was minding my own business walking along the road – Grosvenor Place, London SW1, to be precise – just opposite Buckingham Palace…when something rather out of the ordinary occurred.

You must have seen those people who jog to work and back looking all sweaty and getting annoyed with ordinary folk walking along the footpath?

Well suddenly from nowhere one of those, a guy, jogged past me. Nothing unusual in that you might think?

Suddenly something at the top of his rucksack fell out and flew in my direction.

It hit me in the face and fell to the ground. Whatever it was stopped me in my tracks – and I might add a few other onlookers besides. Upon investigation we could all see a pair of black scrunched up – well-worn by the way – pair of boxer shorts.

Within seconds a bottle of water came bouncing along the street – that was enough to get the jogger to stop. Someone else also shouted out: “Hey mate you have dropped your underpants!”

The embarrassed man skulked past the onlookers at the bus-stop picked up his undies and bottle and ran off as fast as his legs would carry him.

It was one of those moments when I wished I had had my video with me!

Little did I know that a few days later I was to miss a viewing of actor Greg Wise’s underpants at the London premiere of Walking on Sunshine (great film by the way) – when my iPad ran out of storage!

Call me obsessed but does anyone else have any great underpants stories to share? If you do I will reveal my Jeremy Paxman’s underpants story too!