Burger King offers a Whopper Sandwich for 1 cent when you order via the Burger King app... within 600 feet of a McDonald's location. While this is likely the most blatantly troll-faced offer we'll ever list, it's also probably the best price we'll ever see for a Whopper. The deal is limited to one sandwich per customer. Comment below with a solemn promise to be responsible with this power, and not subject McDonald's employees to even the slight hazing they receive in Burger King's promo video.