Splashing means hitting or moving water so that drops of water go everywhere.
Splashing is usually fun and makes people happy. Splashing can also mean making a mess.
Examples:
The kids are splashing in the pool.
She is splashing water on the floor.
The dog is splashing in the river.
I am splashing water all over the place!
The elephant is splashing so much water!
Stop splashing me with water!