Short for paper in your life. The means in which negative actions are formally documented to leave a paper trail of negativity.
Some examples of piyli would be:
Performance or beavioral disciplinary actions
"Damn, I got wrote up today!" I know mayne! Those haters trying to give you piyli"
"I gotta go report today, I hope I don't get a dirty UA!" "That's what happens when you get piyli"