A boy mixes ingredients in a water bottle and then shakes it in the driveway and foam starts to leak out of it. At 0:50, he unscrews the cap and the pressure release causes the bottle to shoot out of his hands and hits him in the groin.
A young boy turns on a hose and lets go of it on a driveway, then he screams and runs while it moves around and sprays water everywhere. Security footage.