As a Hamiltonian and fan of the CFL's Hamilton Tiger-Cats, I'm surprised that the Yankees Suck T-shirts aren't even that old. Ticats fans have been chanting Argos Suck and buying T-shirts for what seems like forever. When Redhat's Bob Young bought the team in 2003 he tried to get fans to no longer use the phrase, but eventually gave up. I've also never seen anyone with an Argos Suck T-shirt being booted from the stadium.
