Solution made from mixing together shit and piss. It is similar to diarrhea, but is typically chunkier and smells similar to the inside of an uncleaned cesspit or septic tank.
"Holy shit, man! It smells like shisst in here!"
"Did you hear about what happened to Dave? Some kids threw a bucket of shisst on his car."
by EbenezerSplooge69 January 6, 2021
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