Q. What is the most foul-smelling animal on your planet?
A. A skunk.
Q. Does a skunk defecate?
Q. And does the skunk's defecation in turn produce its own excrement?
A. Ew, no.
Q. Then there is no equivalent for shisno in your language.
You are, who?
You are a dirty dirty shisno. Ha Ha Ha.