Here's the rule for what to do 
If ever your teacher has the flu 
Or for some other reason takes to her bed 
And a different teacher comes instead 

When the visiting teacher hangs up her hat 
Writes the date on the board, does this or that 
Always remember, you have to say this, 
OUR teacher never does that, Miss! 

When you want to change places or wander about 
Or feel like getting the guinea pig out 
Never forget, the message is this, 
OUR teacher always lets us, Miss! 

Then, when your teacher returns next day 
And complains about the paint or clay 
Remember these words, you just say this: 
That OTHER teacher told us to, Miss!