The cartoon starts with a smiley-faced penis, tap-dancing its way to the front of the screen. Soon he’s joined by friends—one has a top hat, one has a moustache, pants float by in the background. Then vaginas bop their way across, all big eyes, eyelashes, and in one case, a cane and glasses—because old ladies have vaginas, too.

This is a song aimed at three- to six-year-old children in Sweden, on a show intended to teach children about the body.

Some of the lyrics translated are: “Here comes Willie at a run, he has no pants,” and “Twinkle is cool, you better believe it, even on an old lady … Willie and Twinkle, what a great gang!”

A slightly different translation, from the Swedish news site The Local: “‘Here comes the penis at full pace’, and: ‘the vagina is cool, you better believe it, even on an old lady. It just sits there so elegantly.'”

Since the show, Bacillakuten, released the clip online (the full episode hasn’t aired yet), there has been a wide range of reactions, in Sweden and around the world.

There was the initial backlash, with YouTube labeling the cartoon as “adult” content and parents on Facebook calling it inappropriate. Others commented that it’s a good thing to remove the taboo for children of talking about their own body parts.

The show’s episodes are based on questions about the body that children send in, Johan Holmström, who composed, wrote, and sang the song, told me. For instance, one of the questions they received, Holmström said, was “Why do you lose your pee?”