What is Russian Trombone?
1.
A mistaken pronunciation of a "rusty trombone" - where you eat someone's ass while reaching under to give them a handjob.
"Rusty" because you're eating ass. Get it, get it? lolomg
She asked me what I wanted for by birthday and I told her a rusty trombone would be absolutely lovely.
See
2.
when you give a guy a rimjob and a handjob at the same time
I gave Karl Malone a Russian trombone last night!!!