Dumpalumapgus 

Take a really big poopeh.

Damn, I really have to rock a dumplumpagus right now....

Dumpalumapgus by numba March 15, 2003

Dumpalumpagus 

A mammoth sized hairy shit.

I wouldn't go in the bathroom, I just took a dumpalumpagus, and it smells like a prehistoric swamp in there. I swear, I think I saw a pterodactyl circling the toilet.

Dumpalumpagus by Kenosha Joe August 1, 2012