Looks like he's in on the joke!

Pink recently unveiled her new break-up song "So What" – and now the singer is backing up the pop song with even more (comic) aggression.

In the tune, Pink sends a message to her ex, Carey Hart, telling him she's fine. She has her "rock moves," she sings, and if her music video is any indication, those include barreling down a busy street on a lawnmower, lighting her hair on fire and taking a chainsaw to a tree.

But we think Pink might be yanking our chain a little with all this pseudo-aggression. She already assured fans on her MySpace blog that Hart loves the song. And she wasn't kidding. The Motocross star has a prominent role in the video – playing himself! Is all well for the couple?

Check out the video and see for yourself.