The line comes from Christian Bale's leaked on set outburst during filming of Terminator Salvation in 2008, which spread widely online in 2009. In the recording Bale repeats oh good for you while arguing with a crew member, and the exaggerated sarcasm made that phrase the most quoted part. Short clips were later lifted for soundboards, reaction videos and meme edits. It remains popular because the delivery alone communicates mock congratulations without any context, so creators reuse it whenever someone celebrates something underwhelming or acts overly proud.