Steve-O may be a 40-year-old man, but he's still acting like a wild teenager, smashing cars and being a wild child.

On Wednesday night, the former Jackass star was got a little crazy as he got on top of the hood of his beat-up car and smashed it for onlookers.

The former Dancing with the Stars contestant was coming from Demi Lovato's charity event, the first annual Lovato Treatment Scholarship Program fundraiser, which was held at the Troubadour in West Hollywood.

It seems like the charity function revved him up because afterwards he couldn't control himself. The funnyman even took video of the incident on his cell phone.

After the charity even, Steve-O posed with fans and talked about he's still a rebel, despite no longer being up to his wicked ways.

"I am seven years sober, but I am still a maniac," said Steve-O.

Ya can't keep a wild man down!