My uncle in Tulsa said never buy a used truck from a guy under 25, and he was right about the Ranger I looked at
That 2003 Ranger had 190k miles, a fresh coat of spray paint on the frame, and the seller kept checking his phone every 30 seconds, so I walked and found out later he'd flipped it from a salvage auction, but now I wonder if that rule is really about age or just about how desperate someone seems.
Did the guy also have a buddy who "just happened to be there" watching you look at it? I checked out a Tacoma last year from a kid who swore it was his grandpa's truck, but the title was signed in different ink and he got real jumpy when I asked to meet at a shop for a look. Age might be part of it, but a desperate vibe is the real tell, and that kid had it bad.