Do you have a smaller sibling that you don't get along with? Or someone at school or work you like to annoy? Well you have found the right app! This is a soundboard that plays sound of water running to make them pee themselves, or at least make them really, really, really need to go.
In a car journey, your little brother advertises that the need to go to the toilet... What do YOU do? Probably make watery noises with your mouth. That is now over!!!!!