The phrase comes from French online slang built around Valouz, a name attached to the clip as it was shared on soundboards under the tag Chevel. Devant la télé simply means in front of the TV, and the added 8k exaggerates the joke about watching in extreme quality while doing nothing else. It spread as a short shareable audio for reactions rather than as a full song or scene, and it stays in use because the setup is universal and the delivery is instantly quotable in French meme edits.