Woad!

1.

What's the use of wearing braces?
Spats and hats and boots with laces?
Vests and pants you buy in places
Down on Brompton Road?
What's the use of shirts of cotton?
Studs that always get forgotten?
These affairs are simply rotten,
Better far is woad.
Woad's the stuff to clothe men.
Woad to scare your foemen.
Boil it to a brilliant hue
And rub it on your back and your abdomen.
Ancient Britons never hit on
Anything as good as woad to fit on
Necks or knees or where you sit on.
Tailors you be blowed!!

2.

Romans came across the channel
All wrapped up in tin and flannel
Half a pint of woad per man'll
Clothe us more than these.
Saxons used to waste their stitches
Building beds for bugs in britches
We have woad to clothe us which is
Not a nest for fleas.
Romans keep your armours.
Saxons your pyjamas.
Hairy coats were meant for goats,
Gorillas, yaks, retriever dogs and llamas.
Tramp up Snowdon with your woad on,
Never mind if you get rained or snowed on
Never need a button sewed on.
Go it Ancient Bs!!

If you really need it, there's more information here.