I will not burp in class. I did not see Elvis. I will not encourage others to fly. Every six months, London agency, Work Club, invites an up-and-coming artist to come in and decorate the 22 metre wall that spans their office. This time round, illustrator Matt Williams (dressed as Bart Simpson) skated on in, yellow spiky hair, blue shorts and all — and filled the board with every blackboard line Bart has ever written. There’s a lovely little film with ‘the making of’ here.