Claymangler
When a shit is so disturbingly claggy that it requires the shitter to break up the material into smaller pieces in order for it to be flushed away. The said person being a claymangler.
"Keith has been smashing about in the toilet for hours".
"I know. He is such a claymangler. His diet is tucked and his shits are like plastercine."
"I know. He is such a claymangler. His diet is tucked and his shits are like plastercine."