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A dog trained to lick a woman's pussy.
The woman's pussy is smeared with butter and the dog licks it. Hence the name.
That dog.. I'm sure that's what they call a "butter dog"
by Fum2 January 03, 2009

Words related to Butter dog

butter dog japan oral sex
A mainly Japanese pursuit in which liberal amounts of butter (slightly warmes) are smeared on a bird's minge, and a dog (normally a Golden Retriever) is then brought in to lick it off.
Miss Yang took great pleasure in introducing the Tupperware Party to Butter Dog.
by White WeeWee January 26, 2005