Milan (Italy) - What at first glance looks like a crazy party trick has now secured Williams Martin Sanchez Lopez from Uruguay a Guinness World Record. He became an online sensation with his eye-pop, which scares even hardened viewers.

The father of four from Montevideo officially holds the world record for the furthest a man's eyes can be pushed out: a full 19 millimetres was measured as the record.

Even as a child, Williams, who now lives in Milan, noticed that he could move his eyes in an unusual way.

What shocked his friends at school at the time now inspires millions on social media . He explained that he could move his eyes forward in a controlled manner by relaxing certain muscles - a process called "protrusion".

His favorite moment? People's incredulous reactions when he shows them his impressive talent.

"The funniest thing is when a person might not even realize what they're about to see when I approach them and shoot my whole eyeball out this way, people definitely don't just sit there and watch, they basically jump six feet in height," Williams laughed.

The award means a lot to Williams, as his children can now officially consider him a "true, breathtaking record holder".

His daughter Rosa Sanchez described her father as a kind and selfless person - he is said to have always been like that.

"I am very proud of my father, I believe in him, I always knew he could do it and he has had a wonderful journey," she said.