Harry's handful: Styles grabs Niall Horan by the nuts as they celebrate win at Billboard Music Awards
Cheeky Harry Styles made a lunge for band mate Niall Horan's crotch, causing the Irish singer to get a fit of the giggles as they went on stage to collect their win.
As Niall went in for an embrace, prankster Harry evidently had other ideas.
Harry made the 'below the belt' shot as the band were announced as the winners of the Top Touring Award.
Mullingar native Niall took the joke well as he was seen roaring laughing. Harry, meanwhile, acted as if nothing had happened and walked off with a nonchalant expression.
The British-Irish band also took home the award for Top Group, beating off stiff competition from the likes of Maroon 5.
The pop superstars also paid tribute to former member Zayn Malik, whom they referred to as their "brother".
As they expected the Top Group award, Liam Payne said, "I just want to say, Billboard, you guys have been so amazing throughout our career, thank you for the support and as well as our fans, there's one more person to share this with and that's our brother Zayn, so thank you very much," said peacekeeper Liam Payne.