Mud splash in a hole, hit moist surface
Mud drop and splatter, thick liquid slime, foley
Mud, drop thick liquid, single
Mud impact. Moist surface splat.
Mud impact. Moist with surface suction. Splat.
Mud suction, liquid gurgle, thick lava
Mud suction. Wet, moist, juicy.
Mud suction or gurgle. thick submerge