the seam-like line between the scrotum and anus
Even though I had not shaved in weeks, she seemed to really enjoy tonguing my scass while she gave me a handjob.

Chris Griffin referencing his scass indirectly (Season 6 / Episode 12: - Long John Peter): "you'll see my scrotum and see that it has a seam on it and then you'll think I'm made up of two different guys that were sewn together, 'cause that's what I think happened and..."
by chasb November 28, 2010
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A verb. Someone who is into scat sex or is performing scat porn.
Her boyfriend loves scassing, but she thinks it's disguisting.
by Team Mortis February 4, 2019
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