When a female or male(in homosexual scenarios) grabs their partner's penis from behind and plants their tongue and lips on their asshole. Then he or she proceeds by licking and possibly eating out their partner's asshole. At the same time, he or she gives them a handjob. This movement that is performed is very much similar to playing a trombone.
Dude, last night I walked in on Sheeneequa while she was giving Dennis a rusty trombone.

My Boss frequently asks his employees to give him a rusty trombone.

Garrett could not resist asking for a rusty trombone after coming back from band camp.

Stewart: Hey Martha. I Think we should try something new today.
Bertha: Like what?
Stewart: Give me a rusty trombone! Now!
Bertha: But Stewart, you have so much hair all around your ass and on your gooch, it will be like eating a hay bale. Consider shaving that monkey ass of yours and then I will give you the best rusty trombone!
Stewart: Okay, I will do as you say. I may be whipped, but I'm so horny right now.
by bigmelon June 16, 2008
Top Definition
To get rimmed whilst recieving a hearty reach round, thus resembling a trombone player in full chorus.
Phoebe's rendition on my rusty trombone last night, was so moving, it bought a tear to my eye.
by Andy Rush January 20, 2003
The act of performing anal cunnilingus while reaching up above the testicles to manually administer quick up and down motions to the penile shaft; resulting in a violent yet pleasant explosion. It is then customary for the female to then give a quick blow into the anus for good luck, the lips blowing into the anus sounds very similar to a trombones sweet melody. This was introduced to the Americas in the late 50's.
While receiving a rusty trombone I lost control of my bowels.
by JAZ October 14, 2004
Having a girl lick your asshole while giving you a hand job.
"The orchestra of fucking sounded much better with that Rusty Trombone."
by Ryan May 24, 2004
the act of a woman (or man) eating out the asshole of a man while reaching under his crotch and administering a handjob. (slang: rusty trom)
Man, Ashley gave me a rusty trom last night. It was awesome.
by Bryan asadsfadasfa December 02, 2003
when a girl is jacking you off and licking your browneye at the same time
waaa waaaa waaaaaaa
by comal6669 October 19, 2003
When someone is tonguing your balloon knot while giving you the good ole reach-around.
I received my first rusty trombone in Maastricht.
by NYPD February 09, 2004
A simultaneous rim-job/ hand-job.
got a great rusty trombone yesterday
by Mikus February 06, 2003

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