WINNIPEG - The world's biggest mouth belongs to a teenager in Minnesota.
Isaac Johnson was encouraged to seek the Guinness record, officially known as the "Widest Gaping Mouth" after seeing a German win the title with an 8.8 centimetre wide mouth in 2017.
After a lot of training, Issac's open mouth was measured to be just slightly wider than that.
But a few months later, his record was broken in Pennsylvania with a 9.52 centimetre mouth.
But as Issac grew, so did his mouth.
He once again has the biggest mouth on the planet, 10.175 centimeters or four inches.
Issac's mouth can fit objects like a pop can and a baseball.