Their experiment results in a sentient green goo with enormous elasticity and kinetic energy, which wreaks havoc on the neighborhood before the professor recaptures it. Weebo classifies the substance as “flying rubber”, leading Brainard to christen it “Flubber”. Working on Flubber into the following morning, Brainard realizes too late that he has again missed his own wedding. He unsuccessfully attempts to explain his absence to a heartbroken Sara, leaving Brainard determined to prove Flubber’s worth and win her back. Medfield College’s wealthy sponsor Chester Hoenicker, who is threatening to close the school, sends his henchmen Smith and Wesson to persuade Brainard to give Hoenicker’s entitled son Bennett a better grade. Brainard, too busy experimenting with Flubber, unknowingly subdues the goons with a Flubber-coated golf ball and bowling ball.