A cracker (amongst other things) is a reference to a Chrismas Cracker - a brightly coloured decorated tube filled with a seasonal gift, a paper hat and a cr*p joke. Crackers are pulled during the Christmas Day meal, one person will win the contents and the other will re-joice in the knowledge that they don't have to wear a stupid looking paper hat while they eat their mealdopey said:Is "cracker pulling" something naughty?