The Price of Art in Luton

On the bridge approaching the railway,
the man was begging.
I said draw me a dog
and I’ll give you a quid.
So I gave him some paper
and he did.
And I said, there you go, mate,
you can make money out of art!
Will you sign it?
As I handed him the one pound thirty-odd
I had in my pocket,
he informed me that the signed ones were a fiver.