To make a mark or stain by spilling something.
Splodged can make people think of accidents, messes, or fun with paint.
Examples:
I splodged paint on my shirt.
She splodged ketchup on the table.
The cat splodged mud on the floor.
He splodged spaghetti sauce on the ceiling!
The elephant splodged mud all over the place.
We splodged paint on the wall and made a big mess.