Top Definition
Farting into your hand to cover the sound
"Peter pulled his hand, shoved it up his ass, parp, success the sound was killed. But my hand stinks now! the Butt Muzzle worked"
by Drip bwoii February 08, 2010
The use of any item to be inserted to the rectum to stop the flow of carnage in a time of need
Hey man, can you pass me that photo of your mom? I had spicy thai for lunch and I need something to butt muzzle this growler.
by scroogemcbutts June 11, 2014
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