Coming from the ever so famous word "douche," a douche pup is one who is a douche in the making. A semi- douche. A bastard.
Person A: "Hey baby! Want to see my rather large shennanigan?"

Woman: "You bastard! How dare you!"

She walks away

Person A: That line never works! I don't get it! Its huge!

Person B: "Hey listen here ya douche pup! Ladies prefer gentlemen!"
by The one and only PB April 30, 2007
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