rusty co-pilot Share definition Flag When you're doing anal and you slip your finger up her ass at the same time your dick is in there. I wanted to give her something a little extra so I stuck in my rusty co-pilot and tugged her asshole a little. rusty co-pilot by Rusty Copilot III October 15, 2009 0 0 Get merch Get the rusty co-pilot mug. Buy Now — $32.95 See more merch