I am not going to explain the actions here.... maybe a school will volunteer to have their children filmed singing this one! It really would be the only way to understand what its all about.
The lizard Song verse1

Once There was a lizard
Sitting on a stone
And the sun shone above
Along came a fly
In front of his eye
And the lizard took a look
Then 1 2 3 4 blup
The fly was gone
Buzz buzz buzz buzz buzz buzz buzz
Yum yum yum yum yum yum yum
Buzz buzz buzz buzz buzz buzz buzz
Yum yum yum yum yum yum yum
1 2 3 4 blup
The fly was gone
Buy the sheet music here