It´s a paradox that someone made the "Beavis And Butthead" T-shirt, and someone else have worked to air the episodes on TV, somebody else had to write it.
To the guy be wearing it, an army of truck drivers, sellers, credit card employees, security at the shop, or mall where it was sold, etc.
Works sucks indeed! Ha ha. But it can be a good way to make money (and a living).