Visitors at the zoo are watching a hippo when it rips a fart.

At the zoo, you never know what you’ll see at any given time, and this group of zoo-goers has learned that lesson all too well! They’re simply enjoying the sights and sounds of nature while watching a hippo when it lets out the biggest fart ever. Everyone begins to chuckle, and one person can even be heard saying, “What was that??”

“The Hippopotamus is a behemoth in the animal realm and has the dubious title of world’s most prolific farter!” reads the video’s caption. “If farting were an animal olympic sport, the hippo would undoubtedly win gold.”