Harry Styles managed to see the funny side after his bandmates set him up to think he was going to help deliver a baby live on air.
US channel Nickelodeon hired an actress to pretend to be expecting a baby and go into labour before she interviewed One Direction.
Watch Harry panic in the video above.
The Daily Star said Harry's bandmates, Louis Tomlinson and Zayn Malik, were in on the trick while Liam Payne and Niall Horan were also victims of the prank.
Harry is said to have shouted: "Why is no-one here? Can somebody help us?" while Liam rang the woman's fake husband and Niall sat there looking shocked.
And Harry is said to have buried his face in his hands after it was revealed the woman's 'labour' was a prank.