Aussie coach's epic reaction after 'Terminator' Titmus' win is making waves on social media - WATCH

In the stands at the Tokyo Aquatics Centre, Dean Boxall yanked off his mandatory mask, let out a scream that echoed through the largely empty arena, pumped his fists and grabbed at a glass railing like he wanted to rip it apart.

A win at the Olympics is sure to fire up many athletes and support staff. It is the biggest stage for sporting events where athletes from all round the world turn up for their countries and match-up against the best athletes of the world. On Monday, Australian swimmer Ariarne Titmus surprised everyone when she managed to win the gold medal ahead of five-time Olympic gold medallist Katie Ledecky of the United States in a thrilling women's 400m freestyle final.

Olympics: Dean Boxall celebrates Ariarne Titmus' win at the Tokyo Aquatics Centre.(Twitter)

However, it was the reaction of her coach that has caught the attention of the world. Titmus was thrilled with her victory over Katie Ledecky but The Terminator's coach was even more excited.

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In the stands at the Tokyo Aquatics Centre, Dean Boxall yanked off his mandatory mask, let out a scream that echoed through the largely empty arena, pumped his fists and grabbed at a glass railing like he wanted to rip it apart.

Boxall’s emotional display became an instant hit on social media, where one admirer tweeted it was “the best reaction of all time.” The Australian Olympic team tweeted a GIF that said the coach's reaction “sums it up perfectly.”

“I’ve seen little snippets of it. That’s just like Dean. He’s very passionate ... he becomes very animated," Titmus said. “I think that this is just as much for him as it is for me. He’s sacrificed a lot of his family life, his kids, his wife and his job. He puts 100% into being a swimming coach and I would not be here without him.”

Titmus, who has been nicknamed the “Terminator,” handed Ledecky her first Olympic loss in an individual race by rallying over the final two laps to win the 400-meter freestyle Monday.

Boxall was more reserved during the medal ceremony, breaking down in tears as Titmus received her gold.

“He was crying and I was trying to contain the emotions,” she said, "but it’s good to see how much it means to him too.”

(with AP inputs)