We pick up an Amateur girl and convince her that we're going to test the bond between mother and daughter, and have them rub their crotches against each other with a sheet of plastic wrap in between. This time, we use a 'melting' plastic wrap to make it even more obscene! When it senses moisture, it melts and a hole appears, which means that the daughter's vagina is getting wet from the stimulation of her father. Even though they're mother and daughter, they're all wet.