Bert and Ernie are now the world’s greatest inventors, making their latest creation. They name their new robot Frankie and begin commanding it to do things, such as squeaking Ernie’s duckie or yodeling. Bert makes him do something “useful” by making Frankie knit him some argyle socks. He leaves to get a pair as a visual aid, leaving Ernie alone with the robot. Frankie gets carried away with Ernie’s orders and makes a mess of the lab. Bert stops the madness by asking Frankie to “please stop.” He makes Ernie and Frankie clean up, then joins them in their clean-up dance.