 To speed up Gromit's chores of sweeping up, Wallace activates the 525 Crackervac, a vacuum cleaner with sharp metal teeth that can suck up cracker crumbs at high speed.When it starts trying to snatch a packet of Wallace's crackers, he yanks the box away and throws it to Gromit, who eventually lassos the machine and rides it like a rodeo bull.Gromit ties a knot in its suction hose, causing the rear end to burst and shower dirt all over both Wallace and the area of the room around him.