How did Circle you Bert signs start?

Circle You Bert signs originated from a fan-driven movement associated with the popular YouTube channel "Bert's Big Adventure." The signs became a symbol of support for Bert, a character known for his quirky personality and engaging content. Fans began to create and share these signs as a way to foster community and showcase their love for the channel. Over time, the signs evolved into a recognizable emblem among the channel's followers.