When a man tucks his penis and balls in between his legs so they stick out from under his ass and another person blows him while squeezing his balls as if they were trumpet valves. Preferably the giver's nose is nuzzled tightly between the receiver's ass cheeks.
I had swamp ass that day, so when Jake decided to give me a,"french horn," I hestated, then quickly said yes anyway.
by unclePico February 02, 2012

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Licking a woman's asshole while fisting her.
Holy cow, he really gave her the ol' French Horn when he fisted her while licking her asshole!
by le hornster February 03, 2010

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1. The act of oral sex and anal fisting at the same time.

2. An instrument of the brass section, often acclaimed for it's range of low and high pitches. Mostly seen in full bands, orchestras, woodwind and brass ensembles.
Makayla L. just French Horned me. The BJ was great but the fisting was awful! I can't shit or sit!
by Jay Beebz & Bee Zobz January 21, 2011

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equivalent to a female version of the rusty trombone (rusty trumpet). To give a female rim while fiddling with her foofta (vagina).
Brian said he gave his girlfriend a frenchhorn last night. He then went home and kissed his mom on the cheek.
by Mac Diggity October 21, 2009

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A sexual act in which an individual, while performing oral sex, inserts her/his fist into the recipient's anus, thus simulating French horn playing.
Bill had a rough night after getting French horned by Mary; the next day he had to wear Depends as a precaution after all the stretching.
by Panda23 January 04, 2011

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The act of purposely farting while receiving oral sex.
Jane was blowing me and I made her play the French Horn! *High-Five*
by Shannyfanny June 04, 2010

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when a girl sits on a guys face and the guy licks the clit and puts his nose in her asshole, and reaches up and rubs her nipples until she cums.
Tony gave Gretel a french horn. she squirted in his mouth and shit on his nose and was very satisfied!
by evan scott bickford October 28, 2010

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