YES, this film is wacko. The kids have weird names like Rooty Toot. Their ape masks look cheap, but where in the world would you find such a great looking monkey mask today without getting skin cancer? That was no ordinary mask!
The title "one got fat" refers to Orv, the hero of the film who is "not a monkey" and knows all about bike safety, unlike the other children who are all killed (!), injured or left behind somehow because of their negligence. See, Orv was the boy carrying everybody's sack lunches in his bike basket to go to the park for a picnic. One all his cycle mates are... removed... he gets everyone's lunch! Hence - "one got fat".
If you watch closely, before each child gets hit by a car or what have you, the mask suddenly grows giant eyeballs that bulge out of their sockets in horror.
So kids, remember:
1) License your bike or you'll be afoot and your shoes will smolder from running alongside your biking friends.
2) Use reflectors and lights, especially when you ride through a highway tunnel. You are liable to get smashed head-on by oncoming traffic in the pitch black!
3) Ride on the right side of the road or you might flip yourself over a car pulling out of a parking space.
4) Keep your mind on riding and watch the traffic signs or you might miss a stop sign and smash into a semi truck that is crossing the road.
5) Use your hand signals or you might get run over.
6) Don't ride on the sidewalk or you might run over a couple of housewives carrying groceries who end up in a tree.
7) Don't ride double or you'll fall down a manhole into the sewer - bike and all!
8) Tune up your bike or your brakes might fail unexpectedly and force you to be squashed by the oncoming steamroller!
If you do all these things, you might also get fat though, because you will be forced to eat the lunches of all your dead or hospitalized friends.