by Kilowog1 April 25, 2008

It's a take-off of the rusty trombone, where you 'toss the salad', but instead of the handjob, you insert your fingers like you're playing a french horn.
by T-Bone, $chmu, 'Pep', B-Love, and Nipples April 18, 2007

A variation on the rusty trombone, the rusty French horn consists of a man giving a rim job to a woman, while also fisting her. This is reminiscent of a musician playing the French horn, as he places his hand in the bell of the horn to alter the pitch of the sound.
by Michael P. May 04, 2005

Performing analingus on a female while reaching around to fist her, similar to playing a french horn.
by Freddy-Wayne January 01, 2009

Yo motha fucka does your dick feel good,and does your ass hurt from the Rusty French-horn last night?!
by Zack Payne October 04, 2006

the woman is lying on top of the man with buttox and vagina exposed and elevated. the man places left hand around womans leg, reaching clitoris with fingers, and stimulating thereafter. with right hand, he inserts however many fingers are necessary to reach maximum pleasure, while simultaneously rimming her anus. (ex. female version of the rusty trombone)
Bill gave me a rusty french horn, but I had some dingleberries that obstructed the air passage, so his tone was heavily affected.
by Graceblaine StanQuinn April 18, 2006
