A type of reversed blumpkin where a guy eats out a girl while she is taking a shit.
Brian asked, "Hey can I get a blumpkin"? Meredith replied, "I guess, but only if I get a muddy harmonica first".
by Mountain Misti and Kendo January 2, 2009
Get the muddy harmonica mug.
Laying a girl on her side, and rubbing your lips back and forth across her vagina and anus while blowing simultaneously, treating her two love holes as you would the holes of a harmonica. To better create the rusty harmonica effect you may also cup her vagina lips and anus in your hand as you would hold a harmonica.
"Dude, I gave your mom the most righteous rusty harmonica last night!"

"Oh yea? What song did you play?"

"Blowin' in the Wind."
by Haywood Jublomie May 6, 2008
Get the Rusty Harmonica mug.
When you grab a girls snatch, press the folds together tightly & blow through them. If a shrill sound is produced, you pretend you are Van Morrison playing her Hairy Harmonica.

The girl can also play this instrument herself by puckering her flaps & queefing.
Bill Clinton got caught with Monica....playing her hairy harmonica.
by Ash-the-great-1 September 23, 2008
Get the Hairy Harmonica mug.
The act of blowing into a woman's anus while cupping your hand in front of her vagina as if to tune the note. Similar to the rusty trombone for a man.
I just gave her the ol' rusty harmonica.
by BMWBills October 27, 2009
Get the Rusty Harmonica mug.
A sexual act involving flatulence. It usually involves five or more people (usually men) bent over with their pants off ("the harmonica") and one person of any gender ("the player"). "The player" kneels behind the first person, places his or her lips on the anus, forming as tight a seal as possible, and allows the person to blow a fart into his or her mouth. "The player" takes the fart in his or her mouth, places his or her lips on the second anus in a similar fashion, and forces the fart into that person's rectum. The fart is promptly blown back into "the player's" mouth, who continues this action down the line, until every person has recieved/expelled the same fart (sometimes doubling back and forth several times).
EXAMPLE: "Dude, years ago, I was backstage at an N'SYNC concert, and Britney Spears was giving 'em the ol' Brown Harmonica!"
by JoeyKayComedian September 27, 2009
Get the Brown Harmonica mug.
When you take a soft pack of cigarettes, rip off the bottom and top, and light the entire pack at one time, puffing and blowing light a harmonica
Dan was so drunk that he turned his pack of red's into a Sin Harmonica last night
by Kid Kane July 9, 2020
Get the Sin Harmonica mug.