son: dad, did uncle jim come to visit again? father: yes, why do you ask? son: i saw some butt crumbs on the toilet seat
also known as arse dandruff and poo-flakes  small specks of poo that fall down on to the toilet seat while wiping
"son: dad, did uncle jim come to visit again? father: yes, why do you ask? son: i saw some butt crumbs on the toilet seat" What is the definition of "butt crumbs"?