Wiktionary
tub of guts
n. (context idiomatic pejorative English) A fat person
Usage examples of "tub of guts".
It was just possible to admit a sneaking regard for the drunken tub of guts.
He is a big tub of guts and I am a little tub of guts and if there is not any room for , anything else important in a big tub of guts, how can it be room in a little tub of guts.