Can you sit, for a bit, with your bottom on your chair?
On your rump! Don’t slump! Keep your hands over there.
Don’t you fiddle fidget wriggle, don’t you wiggle, don’t you jiggle,
And don’t smile for while, try your hardest not to giggle.
Stop your twitching! Stop your itching! Sit still! Straight backs!
Phew – the teacher’s left the room, you can all relax!