Literally, "dumb head," in German. Used often humorously in English, and can be used in the same context as 'dumbass.' It's an insult that, chances are, not many folks will fully understand. Oh well, who cares? It still is a fun word to say!
Me: So, did you take a look at the newest Family Guy episode?

Idiot Friend: Uh...what?

Me: The new episode, dummkopf!

Idiot Friend: Say what?

Me: (Groans) At least I'm not calling you a schweinhund!

Idiot Friend: Lol, you say funny words.
by Practical Problems March 6, 2014
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Literally meaning "stupid head" used to describe someone being an idiot. Usually in a teasing manner.
Origin: German
You slipped on a banana you dummkopf!
by SunBurnedWagaloo June 3, 2005
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Dummkopf here stinks like a dead monkey because he forgot to wipe his butt again.
by mangus May 19, 2004
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Dummkopf is a German compound word for "Idiot". It's literate translation is "Dumb Head" or "Stupid Head".
"Did you hear about what happened after Han downed a whole Liter of Jagermeister last night?"

"Ja. Han ist eine Dummkopf"
(Yes. Han is an idiot.)
by McHammered111 October 7, 2013
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Dummkopf (doom-cough)- language from germany means idiot, stupid, retarded.
"man jimmy your such a Dummkopf!."
by Cheeky_monkey353 September 14, 2011
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A really smart person when he or she pulls a real boneheaded move and screws up in life, through words or actions.
I can't believe Daniel is a card-carrying MENSA member, but neglected to get insurance on his new car. What a genius dummkopf!
by Jill B. January 12, 2006
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Someone who thinks they’re the king of the mighty hill and acts like they’re in the right all the time, when 90% of the time a quick Google search will prove them wrong.
Jeff said that Satanism is not the worship of Satan, making him a Dummkopf Know-it-all.
by Naterdave July 4, 2020
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