As the video starts, the child in the stripes is reaching under the platform to fill his measuring cup with water. He then pours it in the tube through the funnel. As he pours, water starts flowing out of the other end because the tube is full. He quickly pushed the end down and exclaims: "Yeah---overflow!" He then says: "I knew we could do it, dude." He finishes up by commenting on how many suds he has made.