To puke, vomit, throw up. Usually done when one sees something really disgusting or drinks too much.
The doctor had to extract a squirming bot fly larvae from under Hector's skin. In the middle of the procedure the doc turned away and had to whistle beef.

Jack drank a couple of six packs of swill beer Rainier Light and then went outside to whistle beef.
by Kajoe January 28, 2009
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To deficate in a mostly liquidous form with strong velocity. The result may cause butt cheek vibration, toilet bowl reverberation and an audible rumble.
"I think some passengers on the airplane heard me whistle beef becuase of the dirty looks I received when exiting the lavatory.
by Moosemunch February 3, 2010
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Vomit painfully while intoxicated, usually out the nose.
"man, I feel like shit. I spent half the night whistling beef."
by Frankie Pistlekahk September 8, 2007
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A term coined by Fred Bliss, a slan term for penis. The original word was used in context one day at Chandler's Tavern, a restaurant at the Yankee Candle Company.

The term was invented in the summer of 2000.
Actual excerpt from the conversation where it all started:

Larry said: "She was so pissed off!"
Fred said: "He's lucky she didn't kick him right in the beef whistle!"
by Fred October 25, 2004
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penis.
I first heard my friend Grumpy say this one night in 1994 while a particularly skanky newswoman was reading the TV news in Lexington Kentucky.
Grumpy said "I bet she knows her way around a beef whistle".
by joe anyeaho February 28, 2006
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Used to describe ones asshole particularly one emitting gas.
It's beef whistle time! Toot! Toot!
by the noah June 9, 2005
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