- You may also be looking for Harcourt "Harry" Mudd.
Mud is a mixture of dirt (usually soil, silt or clay or a combination of them) mixed with water or other liquids found in nature.
Cadet Wesley Crusher was the unfortunate victim of a prank when a classmate reprogrammed his sonic shower to spray mud. Later, Cadet Crusher got revenge by altering an antimatter regulator to spray chilli sauce. (TNG: "The Game")