User blog comment:Mmpratt99 deviantart/The Name of This Creepy, Educational Video About Kids Eating Too Much Candy?/@comment-25052433-20150607220923

Ah yes, disturbing cartoons from back in the day, there really is no shortage of them.

While I am not sure which one you are specifically talking about right now, I feel if you dig deep enough into the weird side of Youtube you might just find something.