When a male gets his anus tongued from behind while simultaneously having his meat yanked. The first oxidized brass instrument originated in Florence, Italy between Ms. Lisa and Mr. da Vinci. Historians believe the frown on Mona Lisa is a result of the oxidation from the direct contact of Leonardo da Vinci’s butthole with her lips. Also see Rusty Trombone
Susan took her son to the antique shop and gave him an oxidized brass instrument.
by TukeyComparison April 4, 2019
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A musical instrument borrowed or used as a backup for when a musician forgets or doesn't have his own. An apple cider instrument may typically be broken, in poor condition, and/or very old. A school with a music program may have apple cider instruments on hold for use by forgetful students.
Alex had no idea there was a band rehearsal today, so he borrowed an apple cider instrument from the reserves in the back.
by UncleFitzy June 18, 2010
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Refers to the act in which the male reproductive organ enters the female reproductive tract as a result of copulation.
John: My cousin Theresa got stabbed by a blunt instrument.
Rose: Ha? What are ya on about?
John: Aye, she's got a bun in the oven.
Rose: Oh right. The stupid bitch!
John: Aye..
by sublamagee February 1, 2011
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When a man or woman of age utilizes their instrument of choice a little more than necessary, it is referred to as "musical instrument intercourse". It can happen with every instrument, but it is most commonly practiced with any instrument that has removable parts (i.e. brass instruments).
Person 1: Have you ever tried musical instrument intercourse?
Person 2: Eww, no. What is it like? I'm by human nature fascinated. Please divulge.
Person 1: Well, I had intercourse with my trombone last night. Everyone gets the urge to do it. And it worked.
Person 2: What was it like?
Person 1: Brassy and vibrato.
by Jean-Claude St. Gerard June 14, 2010
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Person 1: “I play the euph!”
Person 2
: “you mean the pussy boi instrument?”
by sauceyboo April 24, 2018
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A variant of the term 'Whatever floats your boat'.
'Whatever piddles your fiddle' = 'Whatever pisses your instrument'
Jade and David are deep into conversation:

Jade: No, I don't want more kids!

David: Well, Whatever pisses your instrument.

Jade: .. What?

David: You heard me.

Jade: .. You be cray cray.
by I Can Ride A Mastodon March 13, 2010
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a not so bad netflix original where the protagonist makes me want to fucking kill myself because of her shitty acting. its a not so good rendition of the book series with barely decent and an atrOCIOUS ONE (makes me want to use eye bleach).
why the fuck am i watching ShadowHunters: The Mortal Instruments (Netflix Series) ???? god this is so shit e n d m e
by CloudLuka August 9, 2017
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