A pounding headache, usually after a night of excessive drinking.
I want to get breakfast, but I have such a massive headdog.
by Road Dogg Jesse James April 14, 2006
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A food made by horrortale sans by chopping peoples head off
Horror!Sans: ONE HEADDOG🪓 COMING UP
by Imthehamman May 29, 2023
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An occurrence of one's head coming into contact with a dog, usually with force.
Instances where a headdog is necessary: frustration, drunkenness, humor, etc.
Guy: GAWWD, I AM SEWWWW DRUNK!!!!! *headdog*
Dog: D:<
by Kantatzu August 7, 2009
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