fart muffler
because the ladies room was full, erin used a fart muffler to conceal her true intentions in the stall
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" What is the definition of "fart muffler"?