A pile of MUD.
Mud and shit and twigs.
Game of Thrones Season 1, Episode 4
the color of MUD.
The Big Bang Theory Season 7, Episode 11
As you can see,
the van is stuck in the MUD.
Money Heist Season 3, Episode 6
You enjoy leaping from one stone
onto another in MUD pools.
Money Heist Season 1, Episode 9
The Big Bang Theory Season 2, Episode 2