Harry Styles Almost Held It Together During a Hidden-Camera Prank, but Ellen Kept Laughing

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Ellen DeGeneres is known for her pranks and scares, but her latest joke with Harry Styles looks like one of the funniest yet. On Wednesday's The Ellen DeGeneres Show episode, the "Fine Line" singer was forced to befriend a pizza delivery man, and honestly, it's remarkable that this poor soul didn't walk out after the 60th time Harry called him "bro."

Harry was a pro, sticking to the host's ridiculous script during a hidden-camera prank — and even improvised when she left him hanging. About a cheese fact, no less! That's right, Ellen went totally silent on the earpiece for a moment because she couldn't stop laughing, which meant Harry was on his own. It's a good thing he's quick on his feet. Watch all of the hilarity go down in the video above.