doo-doo dust
the remnants of shit left in the toilet after you flushed.
person 1: hey joker, you should of checked after you flushed. you left some doo-doo dust in the toilet.
person 2: my bad. i'll be sure to check for doo-doo dust more often.
person 2: my bad. i'll be sure to check for doo-doo dust more often.