Watch Dr. Doofenshmirtz of 'Phineas and Ferb' sing the hell out of 'Bad Guy'

It's the song taking over the Tri-State Area.

On Friday, a Phineas and Ferb fan shared video of show co-creator Dan Povenmire belting out Billie Eilish's smash hit "Bad Guy" for Twitter.

Povenmire, who voices series villain Dr. Heinz Doofenshmirtz, rewrote the song to fit his character's treacherous ways and later performed it at the Disney Channel Holiday Party. Fans just catching on to Doofenshmirtz's burgeoning music career were elated.

Take a listen:

The lyrics, as Povenmire has written them, are:

Lab coat, now red my bloody nose When you visit we come to blows But first I get caught up in prose I’m too vociferous.

I cry myself to sleep at night Tragic backstories full of spite And every day I get in a fight With a teal platypus So you’re a tough guy A semiaquatic rough guy Think you’re so hot stuff guy My evil schemes rebuffed guy

I’m that bad type Evil science grad type No love from Dad type People call me “mad” type I’m the bad guy Duh

I’m not really that bad I guess I’m kinda glad that I can still scare ya’ I’ve got this new inator, I mean, You don’t know what it does But maybe that’s cuz I’m taking over the tristate area.

Povenmire first dropped "Bad Guy (Doofenschmirtz Version)" in October. You can listen to a higher quality recording on his YouTube channel.