You're referring to the classic internet meme "Eel Soup"!
For those who may not know, "Eel Soup" is a humorous video that gained popularity online, particularly on social media and video sharing platforms. The original video features a person attempting to make eel soup, with... let's just say, "mixed" results.
[The person tries to chop the eel, but ends up chasing it around the kitchen with a cleaver.]