Swimmer Ariarne Titmus might have won the gold medal, but it was her coach who captured people's attention - thanks to his ecstatic celebration.
People were left in hysterics at the Australian swim coach's reaction after the 20-year-old won gold in the women's 400-metre freestyle final.
In a nailbiting race, Ariarne, whose nickname is 'Arnie' beat American swimmer Katie Ledecky, after a neck-and-neck race to the pool edge.
No one seemed happier than her coach, Dean Boxall, whose hilarious reaction was caught on camera - while a stadium employee tries (but fails) to keep him calm.
Read more on mirror.co.uk