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1.
the saliva/snot combination the dog leaves on car windows or the sliding glass door while looking in the house
Get me the glass cleaner, the patio door is covered in pupkis.
by Vikki April 28, 2004
 
2.
The act of kissing a puppy or dog in the manor of a dog, that is to say, licking them.
She gave her friend a pupkis.
Why are you pupkissing my cat?
by Anonymous October 28, 2003