A variant of the wingman, only in this case, the two guys are looking to hook up with the same woman for an MMF threesome. The men can be either straight and not interact with each other during the threesome, or it can be a bisexual event in which all three are
having sex together. The idea is that instead of Guy 2 being the wingman of Guy 1, both guys take turns "working in the same cockpit" (an obvious
euphemism for how both guys will be taking turns
penetrating the same vagina).
Guy 1: "Hey man, want to hit the bar and find some honeys
to get laid with tonight?"
Guy 2: "Nah, man. I've got no game and get all
self-conscious about
going soft mid-way through, anyway."
Guy 1: "I hear ya. How about being my copilot instead? That way we can double our odds of finding a chick and then tag in and out as needed."
Guy 2: "Alright, then. I'm in."