One of the oldest gags features a flag - the "BANG!" flag gun gag. A classic joke that is a staple in cartoons. There is no standard "BANG!" flag but one of the more popular flags features a red background with BANG! written on it in black upon a shattered glass field of white in the center.
This post is dedicated to that US Marine who lost his limbs in the Middle East and refused to let go of his sense of humor no matter what.