pipe-shaker

Noun: A gargantuan turd; specifically, a bowel movement large enough that it shakes a house's plumbing upon being flushed. This can be used for descriptive purposes or derogatory.

Oh man, that shit was massive, a real pipe-shaker! My wife said she felt the rattle by the kitchen sink!

Pipe Shaker

When the poop is so big the plumbing has trouble getting her down to the sewer

Damn John, I just took a pipe shaker.. shook so hard I thought the plumbing was going to come out of the wall!