"Shut up and clap."

Origin
"The Foghorn Leghorn Story" ends, and Yosemite Sam says "I don't get it." then Bugs Bunny says "Shut up and clap." Then they both shut up, AND clap! It's a win/win!

How to use

 * To stop someone from doing something, say "Shut up and clap." And then everyone has to shut up and clap.

Trivia

 * It's use is similar to that of "Stop it, Sven."