From Totally Absurd Inventions, which lists "America's Goofiest Patents," here is the Gerbil Shirt:
The Gerbil Shirt wraps your torso in plastic tube passageways, making your bod a super highway of fun for Binky and Bart. The interior surfaces are textured for traction and have air vents for easy breathing.
The inventor suggests you can clean the Gerbil Shirt by attaching it to a faucet (remove pets first please), and you should avoid collisions and falls that could cause pet panic.
the kid in the drawing certainly has the right expression on his face though... confused delight?