Skn 's definitions
The act of holding toilette paper over the rectum while passing gas in a public restroom stall in order to conceal the noise of flatulating.
Because the ladies room was full, Erin used a fart muffler to conceal her true intentions in the stall.
by SKN December 9, 2006
Get the fart mufflermug. 
Get the You gotta eat the booty like groceriesmug.