how to buy a bike from a stranger with money owed on it?

you wouldnt do even that??

dude is acting pretty fuckin wierd tho… hes like, yeah, it doesnt matters whos account it comes out of, but i need a copy of the lien release too, sent to me…im likee uhhh, no? Hes like yeah for my records to show i paid it off… im like, youll get a confirmation number, hes like idk but im shopping right now ill call u back and hangs up lol… Honestly, I really want this bike otherwise i wuda acted dumb like i was gonna hand over 3gs just to get his address and give em a nice crack to the face lol.