‘Jackass’ star Bam Margera welcomes first child

"Jackass" alum Bam Margera is officially on diaper duty.

The ex-MTV star and wife Nicole Boyd welcomed their first child, son Phoenix Wolf, on Saturday.

Margera shared the happy news on Instagram with several sweet snaps of the newborn.

But just because the baby arrived right before Christmas doesn't mean the family was belting carols — Margera uploaded an Instagram video from Nicole's hospital room with Alanis Morissette's "Ironic" playing in the background.

It's the first child for the pro skateboarder, who married Nikki in Iceland in 2013. They announced their pregnancy in June.

Margera opened up about his wild past in September on an episode of Viceland's "Epicly Later'd" and revealed he once battled bulimia after forging a friendship with HIM rocker Ville Valo.

"We would go out to dinner and then (Bam) would immediately excuse himself and go to the bathroom," his mom April recalled. "I said, 'Are you throwing up?' He says, 'Yeah, yeah, sometimes I throw up and that way I'm not gonna get fat.'"