"You don't want this Magna mountain bike? Well yeah, I've got another bike, but its in the back. It's an old 10 speed bike (actually 12 speed), it's old. Are you sure you want to look at it? This mountain bike is much nicer."
Me, "That's OK, I'll give you ten bucks for the old, beat up, rusted Raleigh. Good luck selling the mountain bike."