Farts. I can't believe you let beef-hearts loose in the car. Now we have to smell it all the way home!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. audible releases of intestinal gas through the anus. (Rhyming slang for farts. Usually objectionable.) No more of these beef-hearts!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.