A sumo match is held with a vibrator inserted into the pussy of an Amateur girl and hanging it so that it doesn't fall off! If you win, you get a prize, if you lose, you get a penalty! The number of vibrators increases in the second and third rounds, and it gets more and more extreme! In the serious match, the skirts slide up and the vibrators swing back and forth on the bare buttocks! The more they strain, the more the vibrator hits inside the pussy, and the further stimulation makes them climax! Many Amateur girls can't stand the double attack of shame and pleasure and end up squirting involuntarily! Who will win this heated battle?!