We sang slightly different words when I was a kid:

Po kare kare ana
I bought a squashed banana
And threw it at the teacher
And made her cry.
She said 'Come here
I'll box your ear.'
I said 'No fear'
And I ran away.

It was always sung at about double speed.
The proper song is used at the start of various sports matches and there have been some diabolical versions recently. One singer couldn't remember the words and one of the sports players had to prompt her. Another singer was in the wrong key and had to start again.
Hayley is one of the preferred singers but she's out of the country much of the time, around the other side of the world and the substitutes aren't always up to a decent standard.
Robyn