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Surname. The American version of the name Muller, but with an Umlaut over the "u." Very common in Germany.
American Muellers can be the best people you will ever meet.
Person #1: "That Sarah Mueller, she's really great!"
Person #2: "She might actually be one of the best people I have ever met!"
by always true February 26, 2009
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Verb: to Mueller something/someone is to execute a deep lengthy investigation, usually in order to uncover the deepest darkest secrets and crimes of that thing/person, including and often specifically to find secrets unrelated to the original inquiry.
Frances: "Alright boys, fess up now, who took my lighter? Don't make me Mueller this shit and expose your vast collection of stolen lighters."
by bmb5220 May 22, 2018
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When having intimate sex and your penis goes flaccid for no reason.
I was having sex with my soon to be wife and I received a Mueller and she broke up with me. She then proceeded to have sexual relations with my friend Salinas.
by Rafael salinas March 04, 2014
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The German word for "Dork" , but in the US of A it is usually used to describe a proper "Idiot".

Muellers often live in such redneck area's as Rural areas of Washington state or the Deep South.

They dress in white trash clothing such as checked shirts and allways wear baseball hats , they love to watch Dirt Track racing and their whole life is spent on a quest to actually design build a hobby sports car from that old Camero that has been laying dormant and rusty at the boneyard for the last 10 years.

They generally have atleast one of their front teeth missing and like to grow those funny beards under their botton lips.

If your a Mueller then there is a very good chance "That you really are your own Grandpa.!."

Red Neck , White Trash , Mueller
by James Furlong October 08, 2007
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