The Wiggles have been around for a long time, but throughout their 20-plus years of catchy kids’ songs they’ve never written a song about potty training. That is, until now. Introducing “The Toilet Song,” a funky upbeat tune that’ll help your little one learn to sit on the potty and realize when they’ve successfully gone pee or poo. The song, which premiered with an adorably animated music video, comes as part of a week-long collaboration between the Australian music group and…