Emma McIntyre/Getty

Why yes, that isMacaulay Culkinin an episode ofRunning Point.

Wheres Billie Eilish?!

is Culkins only line.

Macaulay Culkin and Brenda Song attend the Academy Museum of Motion Pictures 4th Annual Gala in Partnership with Rolex at Academy Museum of Motion Pictures on October 19, 2024 in Los Angeles, California

Macaulay Culkin and Brenda Song.Credit:Emma McIntyre/Getty

Howd he land the gig?

He pitched himself, Song tellsEntertainment Weeklyof her fiances surprise cameo.

It was meant to just be him in the back of a scene as an Easter egg for us.

Brenda Song as Ali and Kate Hudson as Isla Gordon in Episode 103 of Running Point

Brenda Song and Kate Hudson on ‘Running Point’.Kat Marcinowski/Netflix

And then, of course, it slowly snowballed.

Knowing Mac, quips the star, he could never just be in the background.

It was really fun.

Macaulay Culkin, Brenda Song and Dakota Song Culkin

Brenda Song attends Macaulay Culkin’s Hollywood Walk of Fame ceremony with their son in December 2023.Amy Sussman/Getty

They got engaged in 2022 after five years of dating and share two young children together.

This isnt the first time Culkin has crashed his partners set.

He is my sounding board.

It’s so silly.

They can do whatever they want, says Song.

They just have to finish school first.

Enjoy being a kid.

Being in this business, there are so many highs but also so many lows.

I just want them to enjoy being kids and not having to worry about that.

Running Pointis streaming on Netflix.