slop around
1. [for someone] to splash around in a body of liquid, such as a bath. Timmy was in his bath, slopping around and singing. Bob is out in the pool, slopping around.
2. [for a liquid] to splash or rush around in a container. The water was slopping around in the bottom of the boat even though the lake we were traveling on was calm. There is some coffee left. I hear it slopping around in the bottom of the pot.
slop something around
to spill portions of a liquid here and there. Don't slop the milk around as you pour it. Please don't slop around the paint while you work.