Harmonicoon 

the harmonicoon is a sexual act where you blow into a african american males anus.

"my wife did the Harmonicoon on me last night and i loved it"

Harmonicoon by UrbanGangga November 14, 2019

Harmonicore 

A genre of music created in central Ontario, in between the years 2003-2004. Music studies have proved in the history of time that harmonicore was a mixture of the musical instrument 'harmonica' and 'metalcore' a genre of music consisting of several breakdowns , repetition and screaming.

Huge fan base in eastern Europe, Holland, and South America. Some may say that it blesses unborn fettuses with gracious words and luck.

Tight Pants - OmGaWdZ h4V y3W h3rD d4t K3Wl b4nD 0n m-EYE-Sp4Ce

Black hair - OMG HARMONICORE IS SO GOOD, HIS BIRDS ARE GRACE.

Tight pants - n0.

Harmonicore by Michael Catsburg January 11, 2007

Harmonicians 

A secret organization for Harmonica players.

Those are some stupid Harmonicians.

Harmonicians by Chavo596 April 27, 2009

harmonicolon 

1) A harmonica which has, through a scientific and medical anomaly, fused with the human colon
2) The act of using ones colon to harmonize music.

Harmonicolon is a medical mystery, the cause of which may never be known.

harmonicolon by Quig Lee January 7, 2008

Harmonicock

An oral sex technique where you slide your mouth up and down an erect penis while humming or speaking into it.

He knew his girlfriend was a keeper after she gave him a harmonicock.

Harmonicock by Faster Redhead October 8, 2017

harmonicock

An oral sex technique where you slide your mouth up and down on a penis while breathing or speaking into it.

He could never dump his girlfriend because she loved to play the harmonicock.

harmonicock by Faster Redhead October 7, 2017

Harmonicock

An oral sex technique where a person slides their mouth up and down a penis shaft while breathing or murmuring into it, like a harmonica.

She had a reputation for giving great harmonicock.

Harmonicock by Faster Redhead September 12, 2017