Most people would shower their grandmas with flowers and gifts on their birthdays, but one guy thought a prank would be a better present.  YouTube prankster Roman Atwood got his grandma arrested for stealing a car as a birthday surprise. 

She thought her grandson was just taking her for a ride in his new sports car, but the tables turned when the cops pulled up with sirens blaring.  See her hilarious reaction here:

I doubt my family would be such good sports as this grandma.  What are your favorite pranks to pull on family or friends?