Dr. John Robert "Johnny Mac" McGuire (born June 28, 1987) is an American dentist and former television personality. He is best known for competing on season 17 of Big Brother US, where he placed fourth.
Dr. John Robert "Johnny Mac" McGuire (born June 28, 1987) is an American dentist and former television personality. He is best known for competing on season 17 of Big Brother US, where he placed fourth.
