How fast can you solve a Rubik's Cube?
Feliks Zemdegs, a 20-year old Australian man, could probably solve it quicker than most people can even answer that question.
Zemdegs just set a new world record by solving the puzzle in just 4.73 seconds, beating Dutchman Mats Valk who only recently set the record in November with a time of 4.74 seconds.
In addition to the world record, Zemdegs also beat his personal best time of 5.695 seconds.
Watch as the new record is set. Don't blink, though. You might miss it.