It's annoying when people talk while the movie's playing.
Kevin and Alex are at a movie when Alex taps Kevin's shoulder, wanting to tell him something.
Kevin wants to respond to Alex.
Kevin makes a motion as if he's zipping his lips, then points at the movie screen.
Kevin asks Alex, who then starts loudly cracking jokes about one of the main characters.
Alex holds his peace until the movie is over.
The audience around Kevin and Alex tell them to be quiet or else.