YouTube vlogger Cory "Mr. Safety" Williams and his girlfriend were wandering around Alaska when they found a frozen lake and thought it would be fun to skip rocks across it - and it ended in an epic discovery.
What they didn't expect was the sound they would hear as the rocks skipped across the thin ice.
Williams couldn't contain his excitement, and continued to find more rocks to create the musical effects.
"This is awesome!" Williams said between his giggles.
The reason the sound is different from the sound you'd get chucking rocks across any other solid landing, is because the ice has water underneath it. The layer of ice vibrates against the water underneath, creating a "drum" sound.
But possibly the best moment of the video was when Williams was so excited he farted. It was in a brief, unexpected moment, and had his girlfriend laughing harder than at anything else.
This video went viral, and many people made comments about how glad they are that the fart moment wasn't cut from the final video.
"His perfect fart had me rolling!" one Facebook user said.
"Got a bit too much excitement and a fart popped out!" another one said.
Other users were just happy to see how much joy one man could have in nature.
We love how goofy this couple is with each other, and how they're willing to laugh at each other!
This is what a relationship is really about: being comfortable enough with each other to be silly.
Agnes Repplier, an essayist and biographer, once said, "We cannot really love anybody with whom we never laugh."
We're happy to see this YouTuber and his girlfriend setting a great standard of what kind of relationship everyone should strive for. Watch the video here.