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

by K LEE April 2, 2007
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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!"
by Bubbabeck51 March 13, 2017
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