The phrase plays on the Teletubbies, the British children's television characters known for their round bellies and antennae, whose look became a common visual joke for pot bellies in Russian slang. Calling a stomach a pivnoe puziko, or beer belly, is already a familiar teasing expression, and adding the Teletubby comparison made it catchier for short videos and soundboards. It survives online because the image is universal, instantly understood, and mild enough to use among friends, in family clips, and in meme edits about food, beer, and dad bods.