Okay, so you take an office chair to a car repair shop. Tell them you will need them to repair your broken tire. They will look at you like you are an idiot. Tell them it's your vehicle and you need it to get to point A to point B. When they tell you they can't help you, demand to see their boss. Be completely serious the entire time, cry for more affects. Do all this dressed as either a homeless person on a business man. This is a pretty stupid prank idea but if you guys did it, it would be funny.