Pete Doherty is to lock himself in a rat-filled coffin.The Babyshambles rocker has offered to perform the ghoulish stunt on stage for one hour at special Halloween event A Plague On Both Your Houses, where his favourite band the Dead Kids are playing - but only if they can scare at least one fan to tears during their song 'Fear and Fluoride'.Dead Kids' singer Mike Title said: "We get all sorts of delinquents at our shows. It must be the name."Maybe he needs a bit of joy in his life and Dead Kids make you happy."A spokesperson for the event, which takes place at a secret London location on October 31, added: "The theme of the party is the return of the plague, so undead, infected guests like Pete will fit in perfectly."Dead Kids always put on a blinding show so we don't blame Pete for making the bizarre offer. Even he will struggle to compete with the grisly zombies at the party though."