the act of flushing the toilet simultaneously while defecating in order to not let people hear embarassing noises coming out of your ass
(Roger and Dave using the urinal)

Dave: Hey, Man! Someone in the stall behind us just flushed the toilet twice and never came out!
Roger: That guy's a simulflusher! Hope he did not have a rectum ripper!
by brooskitooski November 6, 2010
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