rusty trombone

noun

(slang, vulgar) The act of simultaneously performing anilingus and masturbating the penis.

He played the rusty trombone at the jazz concert.

意味（1）

(slang, vulgar) The act of simultaneously performing anilingus and masturbating the penis.

The “RustyTrombone" you know that I think that is the oldest of all these sickening things uh, 'cause I heard that one years and years and years ago.