Having some audience participation helps break up a Pack meeting. Doing something like a cheer, song, or stunt is especially important if your Cub Scouts have been sitting for a little while. Have everyone stand up, including the parents, and do something funny.
A few years back we had a Cubmaster who really enjoyed audience participation segments. The cornier the better! This is a classic along those lines.
This would also work to help demonstrate the importance of clear communication when giving instructions.
Stick Out Your Tongue and Touch Your Nose
Cubmaster: Everyone stand up! Parents also! Now I want to see how many of you can stick out your tongues and touch your noses.
Most will try to touch their tongues to their noses. It is a very funny sight. After about 30 seconds to a minute, the Cubmaster intervenes.
Cubmaster: You are doing it the hard way. I’ll show you the easy way.
The Cubmaster sticks out his tongue and simultaneously touches his nose with his finger.