The line comes from Ted, the 2012 comedy film created by Seth MacFarlane about a talking teddy bear who lives with his adult owner John. The film became a popular comedy hit and its blunt, playful dialogue has lived on in clips, quotes and soundboards long after its release. Short lines like this one spread because they are easy to recognise and easy to reuse, and this request works as a quick caption for wanting something in a video. It is still used because the tone is light, familiar and instantly understood.