Rusty Motor  

alrite its basically wen a guy/gal motorboats a crusty vag

Tommy- yo i totally gave Veronica a rusty motor las nite

Kevin- Thats fuckin nasty bro

Monny- That bitch needs to get cleaned

Kenny- she should chisel that shit out or sumthin

Matt- Lets smoke a blunt

Rusty Motor by K LEE April 8, 2007

Rusty Motor 

The act of defecating between one's breasts and then rocking your head from side-to-side making a "brrr" sound, similar to a motorboat.

Guy: "Yeah last night I gave Peggy the biggest Rusty Motor I've ever seen!"

Rusty Motor by Bubbabeck51 July 17, 2017

Rusty Motorcycle 

The Female version of a Rusty Trombone which involves a female getting rimmed while a vibrator is inserted into her vagina mimicking the vibrations of a motorcycle. It is also customary for the giver to push his or her lips together and make motorcycle noises into her anus.

Oh Katie last night David gave me a Rusty Motorcycle ride and it was amazing!

Rusty Motorcycle by Batfastard February 11, 2010

Rusty Motorboat 

When someone places their lips in the recently used/dirty butt crack of someone else, makes the "Brrrrr" sound of a motorboat, and shakes their head back and forth very quickly.

SEAN pooped himself a work and didn't have any toilet paper so KELLY gave him a Rusty Motorboat to clean him up.

Rusty Motorboat by shifty pipeworks April 25, 2009