Any Wiggles fan (or parent of a Wiggles fan) knows the "wiggles finger", the signature move of the Australian group.
The move, which involves wiggling your hands with your thumb and index finger out is the group's most famous and a sure sign that anyone is a fellow Wiggles fan.
Now, one of the Wiggles co-founders, Murray Cook, has revealed that there is actually a very sad reason behind the move.
Speaking to SBS programme The Feed, in Australia, Cook, who was the original red wiggle and is still involved in the group, said the move represents a sad reality for male childhood educators and entertainers.