U2 frontman Bono defaced the posters of two Irish literary greats by giving Oscar Wilde a pair of his trademark Fly Shades and James Joyce a cigarette. His bandmate Larry Mullen retaliated by defacing a picture of Bono giving him glasses, a beard and a moustache at “U2 By U2” book signing in Easons Book Store, Dublin, Ireland – 23.09.06.