take a plop
Means the same thing as defecate, leave a shit, take a dump, drop a stool, etc.
John will be here in a short time; he had to go take a plop.
take a plop
Means the same as the phrases, "leave a shit", "take a dump", "drop a stool", "pinch a loaf", etc.
{Husoos}: Hold on there Jesse! I need to take a plop before we hit the bars!