Presumably at first just a small, low squirt of water comes out of every patch, but as the players cover more and more of them with hands and feet, the increased pressure on the remaining open ones means their sprays get stronger and higher until all the players are being thoroughly sprayed from below, and getting soaked in the process.
Given the oncoming heatwave, not surprised B&M have already sold out on-line.
Now we just need two or three lasses in jeans and crop tops, barefoot, to play it, with two or three cameras mounted on floor-level tripods all around, looking slightly up, so that when the full spray-wetting starts, at least one of them should have a good view as the water makes contact with the players. Splash!
Love you, too
