Poohberg 

When a person births a turd pile so large that it fills the bowl so completely that a small portion is above the surface of the toilet water.

Last night we had Italian then drank A LOT and had late-night Mexican and thus morning I had a tremendous shit, so big I birthed a poohberg

Poohberg by The Fig April 3, 2022

poopberg

When you take a big enough crap that an iceberg-like structure rises out of the water.

Man, I had a ton of Mexican food last night and made a huge poopberg this morning.

poopberg by robnoha February 26, 2006

pooberg 

When you poo so much that some of the poo comes out of the water in the toilet. That is a pooberg

I pooberged the shit out of that toilet back there. Left it for the next person to admire too.

pooberg by Poo123Master December 4, 2018

Poonberg

A take on poontang, it's the woman's genital region hwuts made for sinking a man's penis, also known as a titanic, in.

I sunk my titanic with your poonberg.

Poonberg by Torpedo Rodeo December 21, 2008