An anus that is extremely tight and grips any object inserted into it.
My mistresses ass is sphinctacular compared to my wife's gape.
by Woodbilly July 17, 2012
Can you define these popular missing words?
A major league fuck-up of epic proportions. Something so glaringly shitty, it could only have popped out of a giant, smelly asshole. Very close to craptastic in meaning, though of a stronger nature.
"Well George, this war has certainly become a sphinctacular success. Helluva job, old boy!"
by Iggy Pup May 16, 2007