Rusty trombone

[Becky]

To get rimmed whilst recieving a hearty reach round, thus resembling a trombone player in full chorus.

[Justin Bieber]

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 50s.

[Tina]

Having a girl lick your asshole while giving you a hand job.

[PussyCat]

when a girl is jacking you off and licking your browneye at the same time

[Sarah]

When someone is tonguing your balloon knot while giving you the good ole reach-around.

[Rihanna]

A simultaneous rim-job/ hand-job.

[Justin Bieber]

When a female or male(in homosexual scenarios) grabs their partners [penis] from behind and plants their tongue and lips on their [asshole]. Then he or she proceeds by licking and possibly eating out their partners [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.

[Justin Bieber]

When a male is receiving anal stimulation orally, while simultaneously getting a hand-job from aforementioned anal diner.

[Sonia]

When a guy gets a rim job and a hand job at the same time from one person. Looks like [the giver] is playing a [trombone]...with a rusty, brown [mouthpiece].

[Dianne]

when a living organism administers [raging anal] domination through the tongue, or the closest cousin to the tongue, while simultaniously and strategically administering a [jerkdown] on a penis of the [anal domination] recipient. side effects include clearing of the testicles, and a squeaky clean delicious ass.