Giving dude a raw hand job while simutaneously lickin' the hell out of his ass.

If you saw it from the side it looks like she's playin' the trombone!
"Jane looks like shit today!"

"Maybe because she was up licking SHIT all night!"

"What a rusty trombone giver!"
by De Ann December 30, 2005
"tossin the salad while yankin the tubesteak smothered in underwear. unless there is some wanted or unwanted gas. then it's reffered to as a rusty gillespie."
In addition to the above statement, there is also the secondary humor involved with the muffled low end sound that would actually come out of a rusty trombine.
sheryl found that the old rusty trombone could play a perfect b flat
by jd March 31, 2004
A simultaneous rim and reach around, i.e. and r 'n' r amongst the cognoscenti.
sally the dwarf's arms were to short to give the fat guy a rusty trombone.
by jack b. nimble August 31, 2003
When a chick gives a guy a reach-around while pressing her lips to the asscrack of a guy as he farts, thus making it seem and sound like she is playing a rusty trombone. Makes me want to join the marching band.
examples are fruity
by hohoho May 02, 2004
When i give my brother a rim job and jack him off at the same time. Very pleasurable endeavor. Something that everyone should partake in.

When mom leaves for work i give rex a nice rusty trombone. HE LOVES IT.
by reehmeyr February 13, 2008
A freakin gay sexual act when one man licks another mans ass while reaching between his legs and jerking him off....
That nigga jp be giving rusty trombones to that gay ass fool
by boost7 April 18, 2006
when you are having your cock masterbated and your ass lick at the same time. this creates a music sound like ahhhhhhrrrr
so your a muso? hey can you play the rusty trombone then!!!
by scott hutchins May 09, 2004

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