Making something slimy or covering something with slime.
Sliming can be gross or funny, like when you play with slime or when a snail leaves a trail of slime.
Examples:
She is sliming her hands with gooey slime.
The snail is sliming the ground as it moves.
The kids are sliming the toys with green slime.
The monster is sliming everything in its path.
The sliming of the pond turned it into a gooey mess.
Stop sliming the walls with that sticky stuff!