The Big Comfy Couch

Ping Pong Polka (1x11)

:

An energetic Loonette promises to read Molly a story, but she gets too distracted with all the bouncy things in the couch (and a few that don't bounce). When a ping pong ball bounces away, Loonette follows it outside, where Major Bedhead delivers a box of ping-pong balls.