The phrase "muddy mess" means a situation that is unclear, confusing, disorganized, or chaotic, just like when things get messy and muddy after rains. Full definition
That space was always meant to be out outdoor «dining room» but the grass never took because, shaded by the bougainvillea, the corner never gets any sun and we were left with a squishy muddy mess. (sarahshermansamuel.com)
While the floor gets tough rubber to help rebuff whatever muddy mess you bring with you, the rest of it is modern Defender mixed with luxury, with ample coverings of sumptuous hide and stitching. (topspeed.com)
In 1892 the Elk Creek Hotel was constructed to welcome visitors to Elk Creek, Ore., but the road was still a winding muddy mess. (cbhistory.org)