[The Saucepan Man]

And I thought it was difficult to guess an inverted quote. Making them is even harder!

So this one is probably rather easy. But it made me chuckle, so here goes:

You provide much that is worthless, you spit out lots of water, you excrete all sorts of vegetables; and not one person bravely taps my walls, on the one occasion I am oblivious to your head.