This was one of only three songs my dad ever taught me.. (the other two were 'when this bloody war is over' and 'how can you tell when a guinea pig is please if he hasn't got a tail to wag'), and his version went:

My eyes are blind, I cannot see,
I left my specs in the WC,
I left my specs in the WC!

I'd look there if I were you.

Or under the piano. It's a well known fact that pianos - particularly stubborn uprights - have their own gravity field. Anything small and valuable will end up under the piano, even if the piano is in a different room, or, in one case I know of, in a different house! Our whole dining room (where the piano is) floor slopes down towards the window in the opposite wall from the one with the piano against it. Anything you drop on the floor will end up under the piano which is at the highest point of the floor... the only explaination is gravity fields.

Or gnomes.

LTS