This is used when smokingMarijuana; towards the end of the bowl it is sometimes hard to tell if it is cashed((gone)) or not. You can tell the person that gets a hit after you to hayor.
"P.a.y.o.r." could also stand for "pass at your own risk", as used to be posted on "road construction" signs back in the '70's, at the same time when these types of signs also read, "men working" and "flagman ahead", before the days when women began taking a lot of those jobs.