This is a short-form vlog-style clip from a UK duo who film prank and street content, apparently built around the "pie n mash" song bit that seems to be a recurring gag of theirs. In this instalment, a water balloon prank goes wrong when it's lobbed at the wrong target.

The video captures the fallout of that mix-up on camera, with the pair diffusing the situation by breaking into their song for the stranger. It's a quick, off-the-cuff moment of the kind typical of prank/reaction shorts, leaning on the awkward-turned-friendly encounter for its comic payoff.