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2.
Burnt marijuana to the point where it no longer has THC content aka ash
We have smoked all of the weed and now all we have is poopykins.
by mnksilvers187 December 16, 2010
 
1.
A pet name that Cartman's mom gave him in the Dog Whisperer episode of South Park.
"Aww Ashlee, you are my favorite poopykins."
by Pickel October 01, 2007