In June 2018, a harrowing video purporting to show two men fending off a crocodile (or maybe an alligator) racked up millions of views on social media:
The footage is real in the sense that it was not digitally edited, but the "crocodile" (or the "alligator) is actually just a remotely controlled prop. It was taken from a much longer video that was originally posted to a YouTube page called "Jay Karl's Hidden Camera & Practical Jokes."
The original video started with the host showing off his prop (calling it an "alligator," not a "crocodile") before he began using it to troll and prank various unsuspecting swimmers and boaters:
The original video even linked to the Amazon products that were used to create the prop. Jay Karl uses a floating alligator head decoy and a remote controlled toy boat:
In other words, it appears that the "elbow drop" move was actually a real, good-faith, and quite courageous response to an uncomfortably realistic and relatively low-effort prank. Either way, though, the video's description is not accurate.