Sando Reapa Louis has a guaranteed way to make his 6-month-old daughter laugh.
All the 29-year-old dad of two has to do is box.
Louis, of Fort Lauderdale, Florida, discovered that by chance last week when he started doing some shadow boxing moves while his infant daughter, Jamila, watched from the counter.
As soon as Louis would start moving his arms, Jamila would start laughing.
"She started laughing so I started recording her and then she just started laughing hysterically," Louis told "Good Morning America." "It caught me off guard because I’ve never seen her laugh quite like that before."
(MORE: Dad with triplets comes up with genius hack to clean all those bottles)Louis said he kept stopping and restarting his boxing moves because he wanted to make sure Jamila was still breathing as she was laughing so hard.
Louis, a musician, described Jamila as a "happy baby" who will laugh at pretty much anything silly her dad or 7-year-old sister does.
"Usually when she’s upset we’ll sing ‘Baby Shark’ and she’ll instantly stop crying," he said, referring to the popular kids' song.
(MORE: Baby instantly soothed thanks to Selena Gomez song)Louis posted the video of Jamila laughing on Facebook to share with family and friends. It has since gone viral with more than 2.5 million views.
"I just posted because I thought it was funny," he said. "It just took off."