It's grim up north London

Ikea have pioneered a new shop till you drop policy, in which customers fight each other with their wallets on a string (a bit like conkers). The person whose wallet drops to the floor must bend over to pick it up while the rest of the crowd stampedes over the top of them. Anyone with a knife is allowed to stab the customer when they're down, but only if it was purchased from Ikea and you have a receipt to prove it.