Used to describe letterboxed programs.
Started on the Cap-Page Board (exact date unknown - presumably in 2004) to describe letterboxed movies and TV shows, so the Cappers would be aware the image would be of a larger-size than normal. The term usually comes with a ™ for no damn good reason at all. BIG-O-VISION has also popped up in numerous captions.
"No! I said you were a big-o-Pain in the ass!"
"F*** YOU! MOTHER F*****!!!"
"EAT SH*T AND DIE YOU PRICK!"