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a device or appliance yet to be invented to 'muffle' the sound of your shit hitting the water and/or associated/simultaneous farting.
"i could have used a shit-muffler this morning, that curry and 10 beers to wash it down i had last night really made things awkward at the handbasins as the airport toilets were bustling"
by chrisee t August 08, 2012
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