What's the time? A traditional rhyme for 5 year olds (and a version for younger kids)

What's the time?
Half past nine.
Hang your knickers on the line.
When a policeman comes along
Don't forget to put them on!

This is the risque version guaranteed to raise a snigger in the playground.

For younger kids who don't find knickers, or lack of them, to be intrinsically humorous, there is an alternative neat final couplet:

What's the time?
Half past nine.
Hang your knickers on the line.
When they're dry, take them in
And put them in a biscuit tin!

'Collected' Backwell, Somerset, England - c 1964-5