You may laugh, Americans. But over here, sneezing on people at close proximity isn't a prank - it's a daily occurrence on rush-hour public transport. And that's no laughing matter.
Still, we'll let you off this time. Mainly because it's very funny (when it's not happening to you, on a packed Tube train, at 7.30am. But we digress).
Click play to watch pranksters Nathan Barnatt and Wahlid Mohammad fake-sneeze on people - an action which, unsurprisingly, prompts reactions of horror, disgust, and the handing over of an ice cream.
That said, none of them were quite as extreme as the reaction to this sneezing prank: