1.) (noun) An old, non washable stain or mark found in old undergarments, usually caused by uncontrollable amounts of fecal matter suddenly exiting the asshole into the undergarments with no warning
2.) (verb) the act of creating a Zachawee
3.) (verb, as a vocal expression) to yell "Zachawee!" is a sign to the surrounding individuals that a stain has entered the premises

the thing that you don’t have when you’re phones percentage is over 20