We're missing dialogue!
A phrase uttered by a young Forumite (whose name escapes me at the moment) who was obsessed with the old TV series Lost in Space. While showing episodes in the Forum, if anyone spoke or otherwise interrupted the show, he would yell rather loudly "We're missing dialogue!!' and then rewind it and play that portion over again. As Forumites are not known for sitting quietly, these episodes became excruciating to watch as scenes were viewed and re-viewed over and over again.