This sound comes from the long tradition of homemade gag foley on user soundboards, where a simple pour of liquid into a plastic bottle becomes the punchline to a bathroom joke. Clips like this spread through prank videos and meme edits, where the surprise recognition does all the comedic work. It sits alongside other crude cartoon slip gags and gross-out reaction memes, which use exaggerated everyday noises to shock a laugh out of the audience. Its lasting appeal is its immediacy: one splash, and everyone knows exactly what is being implied.