schloop

A usually wet sucking or slurping sound.

Today the water made a schloop sound as it lapped up the beach, sounding a very distant cousin to the raging surf on a stormy day.

To move, or cause to move, in a wet, gooey manner.

[…] and before he thought what he was doing he schlooped up a schloop of mud from the banks of the great grey-green, greasy Limpopo, and slapped it on his head, where it made a cool schloopy-sloshy mud-cap all trickly behind his ears.

To make a usually wet sucking or slurping sound.