When you have a case of sickness and everything you have taken in or are taking in via mouth, evacuates itself out your ass in a watery, muddy consistncey for a lengthy period of time.
'After eating that seafood I had a serious case of the Viral mud butt diet!'
Or
'I knew the flu was going around, and it hit me hard with a case of the Viral mud butt diet.'
Or
'I knew the flu was going around, and it hit me hard with a case of the Viral mud butt diet.'
by nurse hotpants March 27, 2012
Get the Viral mud butt dietmug. by AtGonePostalGk March 18, 2019
Get the Mud Spilunkingmug. by The sex prophet September 30, 2016
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Get the Mud Monkeymug. 