Someone told a story about how he was a master of the button that muted the microphone.  They went to see him in the booth while he was doing the game, and he'd be doing the play by play, and the stuff that came out of his mouth between calling the plays would have gotten him thrown off the air, except he always hit the mute button with perfect timing.

Ah, I found one.  

No one uses the cough button like Brewers legend Bob Uecker

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