Perhaps the first introduction of slime in pop culture dates back to 1979 when a Canadian sketch comedy show called “You Can’t Do That on Television” used the substance as one of its gag tools. The show aired for 11 years and was quite popular on the kids' cable network Nickelodeon. Since this time, the network has also incorporated slime into some of their game shows such as “Double Dare” and “Figure it Out.” They also continue to use slime as a staple for the annual “Kids Choice Awards.”
Slime was also used as a key prop in the 1984 blockbuster movie Ghostbusters, which only added to its popularity. So kids saw the sticky gooey stuff as fun and wanted to play with it, and, before long, the slime was mass-produced and marketed as a kid's toy and best slime kits followed.