The facts in the case are 'muddy'.
The recording sounded 'muddy'.
His shoes were 'muddy'.
(..) Including her! In ... ...Andy Dufresne escaped... ...from Shawshank Prison. All they found was a muddy set of prison clothes... ...a bar of soap... ...and an old rock hammer... ...damn near worn down to the nub. I had thought it'd take a man years to tunnel through the wall with it. (..)1994 The Shawshank Redemption