The microphones were switched off as Mubarak started to reply.
¿Por qué no te callas? (English: "Why don't you [just] shut up?") is a phrase that was uttered by King Juan Carlos I of Spain to Venezuelan President Hugo Chávez, at the 2007 Ibero-American Summit in Santiago, Chile, when Chávez was interrupting Spanish Prime Minister José Luis Rodríguez Zapatero's speech. The phrase became an overnight sensation, gaining cult status as a mobile-phone ringtone, spawning a domain name, a contest, T-shirt sales, and YouTube videos.
http://en.wikipedia.org/wiki/¿Por qué no te callas?