Smile, Darn Ya, Smile!.Foxy is a trolley engineer whose problems include a fat lady hippo who can't fit into the trolley and a set of wheels that detach from the trolley car while it's moving. Foxy picks up his vixen girlfriend and gives her a ride, but along the way, the car is blocked by a cow who won't get off the track. A group of nearby hobos sing the title song while Foxy tries to move the cow; he finally runs the car underneath the cow and goes on his way...