Plop
noun
A sound or action like liquid hitting a hard surface, or an object falling into a body of water.
“He heard the plops of rain on the roof.”
Excrement; derived from the "plop" sound made when it hits water in a toilet.
verb
To make the sound of an object dropping into a body of liquid.
To land heavily or loosely.
“He plopped down on the sofa to watch TV.”
To defecate; derived from the "plop" sound made when excrement hits water in a toilet.