Shuggamaguck

The muck and mire at the bottom of a lake or pond.

Thick brown wet mud found in marshy bogs, lakes, ponds and other still bodies of water

He came up from the bottom of the lake with a fist full of shuggamaguck.

Careful round that there crick or you'll end up with shuggamaguck all over them shoes.

"Awe! I shuggamagucked myself!"

Don't be tracking that shuggamaguck all over my floors!