Pogo stick

A pogo stick is a device for jumping off the ground in a standing position, through the aid of a spring, or new high performance technologies, often used as a toy, exercise equipment, or extreme sports instrument.

When Doctor Rebos was putting his Wonder Dog android together, he was having Loco hand him the parts for him to assemble, he asked him to hand him a leg, and then another one. But Loco told him he already handed him a leg, but Rebos tells him: "Dumb, dumb, I'm not making a pogo stick!"