Acoustica 

Acoustica is the new name of Metallica, they were ok to still call themselves Metallica after the releases of Load and Reload, but after that they were coined with the name Acoustica. They should have practiced what they preach when they released Death Magnetic and made that day "The day that should have never came".

Dude, did I just go to a metallica show?

No, we just saw Acoustica because half of their sets were acoustically covered Bob Seger and Lynard Skynard songs.

Acoustica by RaginCaveman22 March 13, 2010

Ethylphasia Acoustica Abnormale 

Drunk whisper; drunk talking; attempting to talk quietly when drunk.

She thinks she is whispering, however, after drinking that Jim Beam she is suffering from Ethylphasia Acoustica Abnormale.

Ethylphasia Acoustica Abnormale by Drunk Whisper December 18, 2017

(acoustic version) 

Absolute soul-wrenching heartbreak from which there is no recovery.

All aboard the lolnope train to fuckthatville (acoustic version).

(acoustic version) by lavie-boheme September 28, 2012

Acousticophilia 

Acousticophilia is defined as being sexually aroused by any auditory stimulus (including music, songs, poetry, verbal abuse, speaking in a particular foreign language, screaming, panting, moaning, groaning, and heavy breathing). The key to defining it as acousticophilia appears to be that the stimulus itself is not necessarily sexualized.

Willow found that when they were masturbating, playing the sound of someone laughing always made them orgasm. They found the same with certain key changes in music, harmonies, specific YouTube videos and bird calls. Willow has acousticophilia.

Acousticophilia by dapperchapper July 21, 2017

Douchebag Acoustic 

The genre of music played by guys who never learned to actually play guitar, usually consisting of three chords and with lyrics about how sensitive they are and how much they love someone they just met (i.e. Justin Bieber)

Man 1: How the hell does he get all the chicks, he's terrible.
Man 2: It's because he plays a douchebag acoustic.

Man 1: Hey, I just learned how to play "Hey there Delilah"
Man 2: Congratulations, you've mastered the douchebag acoustic, now get out of my house, we can no longer be friends

Douchebag Acoustic by Boureö August 30, 2010

Scrotal Acoustics 

The sound of scrotal impact upon the anal region of the recipient.

The fat individual tends to create louder scrotal acoustics during intercourse.

Scrotal Acoustics by Khristof October 21, 2004