Rusty Accordion 

Female version of the rusty trombone, where a woman bends over allowing a guy or girl to tongue the woman's anus while reaching up through her legs and fingering her clitoris.

All Beth has to do is bend over and say, "Time to play that rusty accordion."

Rusty Accordion by goldengash August 25, 2022

Rusty Accordion 

The act of performing fellatio while tickling or fingering the anus

That chick was giving me head, then all of the sudden she put a finger up my bum. She was playing the Rusty Accordion

Rusty Accordion by iliopsoas September 11, 2010

Rusty Accordian 

Female version of the rusty trombone, where a guy or girl tosses a females salad while fingering her box from a reach around position

Last night i had a concert in my bedroom, my girl played my rusty trombone and i returned the favor by playing a solo on her rusty accordian

Rusty Accordian by R.M.C, October 23, 2008