An extraction from the asshole that can cause great muscle pain. Mixture of shitting and farting at once that may cause an uncomfortable dispositioning in your pants.
by LT Ram September 3, 2009
 Get the shartmug.
Get the shartmug. by Woody Thomas July 4, 2008
 Get the shartmug.
Get the shartmug. Jane and I were napping together after filling ourselves with bean burritos and getting drunk off beer earlier in the day at El Charro’s.  We were supposed to meet my parents for dinner at 7:30, and I didn’t want to not show up because first of all my parents generally have a big stick up their asses and second they wanted to meet Jane for the first time.  The alarm was supposed to ring at six, but one of us set the damn thing incorrectly so we kept dozing until Jane snapped out of it around 7.  Girls can wake you up in funny ways sometimes, and old Jane was a funny one.  What she did was she climbed on top of me and sharted all over my face.  I knew she meant to fart, so I wasn’t mad.
by Rj-C December 27, 2007
 Get the shartmug.
Get the shartmug. by Jon D. December 20, 2002
 Get the shartmug.
Get the shartmug. a portmanteau of shit and fart, and refers to a fart that results in the soiling of ones pants/underwear
by Live2Die October 1, 2005
 Get the shartmug.
Get the shartmug. by andrew stewart August 6, 2004
 Get the shartmug.
Get the shartmug.