A crap so bad it is said to stain the toilet bowl. This can be due to the size of the crap, or, alternatively, because of the painful feeling incurred before or during said crap, probably caused by the food ingested to create the aforementioned crap.
Don't go in there yet. I just dropped a bowlstainer.
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)