He's previously broken nearly 250 Guinness World Records.
A man in the US has broken the world record for the number of marshmallows caught in his mouth.
David Rush, from Idaho, broke the Guinness World Record by catching 77 marshmallows in 60 seconds.
Among the requirements were the marshmallows being launched from a homemade catapult from a distance of 6-and-a half feet.
He's previously broken nearly 250 Guinness World Records to promote STEM education.