The Jag Rag is a clear ripoff of the Pittsburgh Steelers' "Terrible Towel," which has been one of the more successful ideas in NFL history.
For a fan idea or a team's promotions to draw fans to the stadium to succeed, it firstly has to make sense. Secondly, the idea has to be unique enough to catch on. For example, the Green Bay Packers' Cheeseheads have succeeded in a big way.
Unfortunately for the following five ideas, none succeeded—or will. Let's take a look at the Jag Rag and the five dumbest ideas in NFL history.