Black as a Skillet simile
Completely black, or so dark that everything cannot be seen
Don't make me go down to the cellar. It's as black as a skillet!
After having fun in the mud, the children were as black as a skillet!
I'm scared of the basement! It's black as a skillet!
Completely black, without any light or other color
Completely dark
Completely black
(Image Source: Internet)
This phrase is part of a group of phrases used to describe darkness. A phrase in that group black as night, was used by John Milton in Paradise Lost.