Yeah, if you aren’t aware it comes from a myth about the arctic creatures, lemmings. In 1958, Disney created a nature documentary that included misinformation claiming that lemmings would run in large groups and if one ran off a cliff, the rest would also join them in running off a cliff. This mass suicide was shown on screen. The reality, in fact, was that Disney had intentionally stunned the poor creatures by spinning them around until they were dizzy enough to fall off the cliff.