jolly-bobber

People who are half dancing/half walking very slowly in huge crowds. They constantly change direction and let their pets walk into you at high speed. They are extremely rude and inconsiderate and generally end up barging people out of their way. They get very grumpy when you outsmart them. They enjoy dancing to children's songs, and they especially love the Peppa Pig theme tune.

"Did you see those jolly-bobbers today?"
"Yes. One walked straight into me and shouted at me when they accidentally fell over. I must admit, it was hilarious!"