GARBAGE PAIL KIDS
In the 1980's, the corrupting influence on children wasn't Beavis and Butt-head or South Park, but rather a raunchy and disgusting series of playing cards that poked fun at the Cabbage Patch Kids. It was a flash-in-the-pan fad that appeared in 1985 and was gone by 1988 but not before 16 editions of the cards had gone out, an animated series was produced, and a movie was released.
The Garbage Pail Kids were the target of lawsuits by the makers of Cabbage Patch Kids and schoolwide bans on the cards. The animated series never appeared on American TV due to complaints to networks and the movie was a huge bomb at the box office.
The cards saw a brief resurgence in the 2000s with entries like "Harry Potty" and "Christina Uguleria," but have now once again vanished into obscurity.