PIR has 2 meanings
Parent in room
Just so that you know, PIR.
|PRW||Parents are watching|
|9||Parent in room|
|C9||Parent in room|
|PIR||People in room|
|POS||Parent over shoulder|
|SPROS||Stop, parents reading over shoulder|
|SOSG||Someone over shoulder gone|
PIR is an acronym that stands for "parent in room," which is used to warn a person that a parent is nearby. It is typically used by teenagers who are hiding something from parents.
PIR is often seen in texts, messages online, and snapchats as a sly warning. If you're a parent and you see this acronym you should know that your kid is up to something but try not to freak out and turn your house into Guantanamo Bay.