Sphinkter Busters are large fingers from a large hand capable of causing serious damage to ones rectum
by kevtherev April 24, 2010
Get the Sphinkter Busters mug.A shit so large, it rips one or more of the circular muscles in the anus on its way out. This usually causes bleeding and mild to intense discomfort.
Male 1 (In the restroom): Call an ambulance!
Male 2: Why?
Male 1: I just had a sphincter-buster! My anus is bleeding and I cant sit down!
Male 2: Why?
Male 1: I just had a sphincter-buster! My anus is bleeding and I cant sit down!
by BobotheClown December 14, 2008
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