Thick as Two Short Planks

I was trying to think what the mist was as thick as, this is the thing that came to mind. But you get the general idea, I hope.

I had a quick wander along the shore and saw the usual birds plus a curlew with its impossibly long curved bill. Then home to cleaning house and yard - the garden is too muddy. Classes again tonight, then a party at a friend's house, though I don't suppose I'll stay long. I just can't cope with late nights and early mornings any more. How boring is that??