A fan threw a shoe at the stage near Styles, prompting the singer to pick it up and wonder where the other one was.

He got his answer: Suddenly a second shoe hurtled to the stage and hit the 19-year-old singer in the groin, causing him to keel over and curl up on the floor as he cupped his crotch. 

The incident also caught his bandmates by surprise, shouting "Man down!" as Payne and Malik checked in on Styles to make sure he was all right.

Thankfully, he was, and Styles got up and made light of the incident by doing some lunges.