Nickelodeon’s slime started with Canada’s You Can’t Do That On Television

If thoughts of slime and the United States have risen together in your mind recently, know they learned it from the best. The pop-culture-permeating green slime of Nickelodeon, which blasts out of NFL games animated for kids, drops on the host of each year’s Kids Choice Awards and was sold as Gak in the ’90s,…