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1.
adj. one that feels bad; a term to describe something that isn't very good. Commonly used sarcastically.
This St. Nick's Shastas is pretty poopish.

You work today? That's pretty poopish.
by Jodans February 05, 2008
 
2.
adjective; synonym to shitty, crappy, etc.

anything that happens and you don't like the outcome; anything like or resembling fecal matter
"your full house beat my flush! that's poopish."
by porkrind February 06, 2008