The correct response is "What is a blowout preventer?"
Arizona Diamondbacks pitcher J.J. Putz was winding up to throw a pitch to New York Mets infielder Justin Turner when the Chase Field audio tech guy prematurely started playing a clip of "Kickstart My Heart" by Mötley Crüe. Not only that, he played it loud, scaring the pants off of just about everyone in the stadium. Mets play-by-play announcer Gary Cohen said it sounded like a loud "mooing" sound.
Möötley Crüe, anyone?