A fun play on words used to refer to a regular, non-electric bike. It comes from electric guitars and acoustic guitars. There are electric bikes, so why not acoustic bikes?

A term made up by e-bike enthusiasts who know know "acoustic" relates to sound but use it because it's fun. Apparently makes obsessive weirdos angry.
Person A: Yeah, I have an electric bike but today I'm riding my acoustic bike.

Person B: Haha, that's a one. I'm not going to nitpick the scientific accuracy of the phase because I'm not a pathetic dweeb.
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A forbidden instrument because of its power that it possesses to play the forbidden song sweet home alabama. This song is forbidden for many reasons.
A: He now owns the legendary acoustic guitar
B: How does one possess so much power?
by penismanhuge December 15, 2020
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Another word for autistic, but it makes it sound more friendly towards minorities and otherwise.
Here’s an example of “is he acoustic?”

“Bro I played gorilla tag and I grind the shiny rocks!”

“Nigga, are you acoustic??”
by Is he acoustic? November 9, 2023
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A person, most notably a rapper, that sounds like another rapper or someone within their own gang, business, family, or social group.
Chip the Ripper sounds like Waka Flocka Flame every time he spits on the mic, therefore he is waka's acoustic twin. (Check the tags below for more examples of rappers, they are listed as pairs in sequental order)
by ogdajuiceman June 17, 2010
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Where one's singing shaves off one or many needed notes.
At karaoke, Jebus' acoustic shave of Born to be Wild really butchered the song.
by Jozef de Beer March 29, 2008
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