Jason Biggs introduces his kids to on-screen dad Eugene Levy

Father and son are back together!

On Monday, Jan. 22, 2018, actor Jason Biggs shared a video of Eugene Levy meeting his newborn son, Lazlo, for the first time. In the clip, Levy, who starred as Biggs' dad in the American Pie franchise, plays with the baby, making him laugh as he says, "Knuckle punch!"

In the post's caption, Biggs revealed that he hadn't quite managed to make his baby boy laugh yet, so he recruited Levy for some help. "Laz's first LOL. I couldn't make him laugh, so I had to bring in the big guns," Biggs explained.

A post shared by Jason Biggs (@biggsjason) on Jan 22, 2018 at 3:13pm PST

On her own Instagram page, Biggs' wife, Jenny Mollen, posted a photo of Biggs and Levy with Laz and older son Sid. "Jason's father stopped by to meet the baby," she wrote, noting that the apple Sid's eating in the photo was "purely coincidental."

As Nicki Swift previously reported, Biggs and Mollen welcomed baby Lazlo into the world on Monday, Oct 2, 2017.

While we wait for more posts about Biggs and Levy's big reunion, read all about the strangest celeb baby announcements ever made.