Today’s office etiquette pundits insist that when it comes to being the office funny man the proper thing is to throw humor against the walls. Co-workers known for their bad puns should be enlighten that tin signs with crazy old fashioned sayings is really the way to go! Crack all the bad Knock Knock jokes at home you wish, but trendy jokesters know, that by just pointing in the direction of a funny tin sign is all they need for the punch line.