Since we are into loo-wall graffiti; I once found the following two verses on the walls of adjacent cubicles in the Gents' at Cambridge Circus:-

One would think for all this wit
That Shakespeare had been here to shit
And after all that might be true
For Shakespeare had an arsehole too
.,,.

A man's ambition must be small
To write his name upon this wall
For even Shakespeare did not write
When he sat down to have a shite

Now that's what you might call a literary controversy, innit eh?

≈M≈