Celebrity Parents Baby Appears to Clap in Ultrasound (VIDEO) "The experience is one I'll never forget," mom-to-be Jennifer Cardinal wrote on YouTube By Alex Heigl Published on March 31, 2015 11:10 AM Share Tweet Pin Email Jennifer Cardinal and her husband are expecting, and, like a lot of people, they wanted to make a pregnancy announcement video. But unlike a lot of people, they happened to catch their bundle of joy seemingly “clapping” during an ultrasound. At the doctor’s suggestion, the pair took a video of the ultrasound, with Jennifer singing “If You’re Happy and You Know It.” Get it? Because the baby’s “clapping.” The original clip went up March 26, and it’s currently sitting at nearly 3.9 million views. The comments section appears to be mostly people yelling “Fake” – sometimes in a few different languages – but the top comment comes from Cardinal herself, who wrote: “The experience is one I’ll never forget, the baby clapped three times, then the doctor rewound and scrubbed it while we sang. No mystery. It was amazing. Trolls won’t get me down!” That’s the spirit.