There’s no telling what a baby will find funny. One little boy couldn’t stop laughing when his mom tried to scare him.

Mom Tracey Saragosa of Georgetown, Massachusetts told ABC News that her son, Marino, laughs hysterically every time she says "boo."

She says it’s the only video she has ever posted to YouTube, but it has since gone viral.

“Everybody loves a laughing baby. I’m sure there’ll be other videos to come because he’s such a happy baby,” Saragosa said.

Saragosa made the video last month.

"It's the only video I've ever posted to YouTube, but I thought it was just so cute. Everybody loves a laughing baby. I'm sure there'll be other videos to come because he's such a happy baby," Saragosa told Good Morning America.

This video also reminds us of our favorite laughing baby video of all time — Baby Ethan, who couldn’t stop laughing at ripping paper. Watch that video below.

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A migrant farmworker harvests Vidalia onions at a farm in Collins, in 2011. A coalition of farmworkers, including one based in Georgia, filed suit last month in federal court arguing that cuts to H-2A wages will trigger a cut in the pay and standard of living of U.S. agricultural workers. (Bita Honarvar/AJC)

Credit: Bita Honarvar