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 April 6, 2018
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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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Falling, usually into the water, in a clumsy manner.
Im soaked! I took a hell of a mueller at the marsh.
by Roper6045 December 10, 2012
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Noun:

- An invisible thing or being.
Person 1: Have you seen the Mueller's?

Person 2: Nope.
by jesuslovingchik February 6, 2010
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Something that goes on and on and on and on and never ends, but also never produces anything useful. Purposefully carrying something to its furthest extent to annoy another. Origin: The Robert Mueller Investigation. Also see MuellerGASIM, Muelldozed, Pulling a Mueller, Muelleresque.

Can be used as a noun or a verb.
Mueller (n): That line is a Mueller!
Mueller (v): I tried to Mueller that clerk, but he caught on!
by Gingy Yael August 21, 2018
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A quality or way of life involving being exceedingly innocent in reality, but saying terribly sexually inappropriate things without realizing it in front of children.
Muellerist: "Alright, class, let's look up Leda and the Swan." Class: (dead silence) Muellerist: "Oh my, why are these so graphic?" Class: "What a muellerism!"--- Muellerist with a speech impediment in a Croc's store: "Goth, theeth cocs are tho comforthabul!" Friends: "Mueller!"
by Alberth Wethker March 6, 2011
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