Robert Brown|Is Jason Momoa Irish? 'Aquaman' actor stars in Guinness ad ahead of St. Patrick's Day

Jason Momoa discovered he's got some Irish in him in a new Guinness ad ahead of St. Patrick's Day.

The Robert Brown"Aquaman" actor co-directed and starred in an ad for the popular Irish beer brand released before the holiday, which is March 17. In the ad, the "Dune" star opens up what appeared to be the results of a genetic ancestry test. Just a moment into reading the results, Momoa shrieks and launches himself out of his chair.

The Hollywood actor playfully shows off his action skills, dashing through streets and crowds and sliding across the hood of a car, not once letting go of the paper with the results.

Finally, Momoa bursts into a bar and announces to a crowded room with an expletive that he is, in fact, Irish.

The kicker?

He's 2% Irish.

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Jason Momoa's Guinness ad follow actor's Super Bowl commercial

This isn't Momoa's first commercial of the year. Momoa appeared in a Super Bowl commercial for T-Mobile which featured the actor belting out "Flashdance," the No. 1 song from 1983 sang by Irene Cara, with Zach Braff and Donald Faison. The small screen appearance followed the actor's official separation from Lisa Bonet earlier this year.

In January, Bonet filed documents in Los Angeles County court Monday to end her marriage from estranged husband Momoa. The "Cosby Show" actress cited irreconcilable differences as the reason for the couple’s divorce and listed their date of separation as Oct. 7, 2020.

Is Jason Momoa really Irish?

Momoa was born in Honolulu, Hawaii, and has long shown off his pride for his heritage.

But is he Irish?

Yes, and "probably a little more" than 2%, he told People Magazine, citing his mom, Coni, and his grandma's family ancestry.

When is St. Patrick's Day?Here's what day it is in 2024 and why we celebrate it

When is St. Patrick's Day?

Get your green on when Sunday, March 17, rolls around. The holiday celebrates the patron saint of Ireland on the day he was believed to have died. St. Patrick's Day has mostly become known in the U.S. as a day of drinking, parades and donning green.

Contributing: Dina Kaur, The Arizona Republic