Mystery of the Urinal Deuce Cartman reveals who masterminded the attacks of 9/11, while Kyle and Stan search for the real truth; meanwhile Mr. Mackey just wants to know who dropped the deuce in the urinal. Details Casts Videos Galleries Posters Season Lists Title Mystery of the Urinal Deuce Genres Animation Comedy Release Date 2006-10-11 Episode Runtime 00 Hours 22 Minutes Season Number 10 Episode Number 9 Production Companies South Park Studios, Comedy Central, Parker-Stone Productions, MTV Entertainment Studios Trey Parker... Eric Cartman / Stan Marsh... Matt Stone... Kyle Broflovski / Kenny M... Isaac Hayes... Chef (voice)... Mona Marshall... Sheila Broflovski (voice)... April Stewart... Sharon Marsh / Ms. Cartma... Nolan Splavec... Additional Voices (voice)... Trailer (Trailer) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (1960x1102) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1600x900) Original Size (1920x1080) Original Size (1820x1024) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1280x720) Original Size (1280x720) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (1280x720) Original Size (3840x2160) Original Size (3840x2160) Original Size (1920x1080) Original Size (3840x2160) Original Size (2000x3000) Original Size (2000x3000) Original Size (2000x3000) Original Size (1400x2100) Original Size (2000x3000) Original Size (2000x3000) Original Size (1000x1500) Original Size (680x1000) Original Size (960x1440) Original Size (1920x2880) Original Size (1000x1500) Original Size (1000x1500) Original Size (1320x1980) Original Size (1920x2880) Original Size (2000x3000) Original Size (1100x1650) Original Size (1100x1650) Original Size (2000x3000) Original Size (1000x1500) Original Size (680x1000) Original Size (1000x1426) Original Size (1920x2880) Original Size (1000x1426) Original Size (600x900) Original Size (680x1000) Original Size (600x900) Original Size (1400x2100) Original Size (800x1200) Season 1 13 Episode(s) 1997-08-13 Season 2 18 Episode(s) 1998-04-01 Season 3 17 Episode(s) 1999-04-07 Season 4 17 Episode(s) 2000-04-05 Season 5 14 Episode(s) 2001-06-20 Season 6 17 Episode(s) 2002-03-06 Season 7 15 Episode(s) 2003-03-19 Season 8 14 Episode(s) 2004-03-17 Season 9 14 Episode(s) 2005-03-09 Season 10 14 Episode(s) 2006-03-22 Season 11 14 Episode(s) 2007-03-07 Season 12 14 Episode(s) 2008-03-12 Season 13 14 Episode(s) 2009-03-11 Season 14 14 Episode(s) 2010-03-17 Season 15 14 Episode(s) 2011-04-27 Season 16 14 Episode(s) 2012-03-14 Season 17 10 Episode(s) 2013-09-25 Season 18 10 Episode(s) 2014-09-24 Season 19 10 Episode(s) 2015-09-16 Season 20 10 Episode(s) 2016-09-14 Season 21 10 Episode(s) 2017-09-13 Season 22 10 Episode(s) 2018-09-26 Season 23 10 Episode(s) 2019-09-25 Season 24 2 Episode(s) 2020-09-30 Season 25 6 Episode(s) 2022-02-02 Season 26 6 Episode(s) 2023-02-08