The phrase is English slang, shortened online to ih8u in usernames, captions and text messages, and that shorthand is how this clip is labelled and searched for. Short reaction clips like this spread through meme edits, gaming videos and chat apps because a three-second line is easy to drop into almost any moment of mock annoyance. It has no famous scene behind it in the information available, so its popularity comes from the line's bluntness and instant recognition rather than a specific show or character. Creators keep using it because it says the joke in two words.