stands for "Permission to Post, Admin". Used in facebook groups to ask for permission in posting something that may be off topic for the group
PTPA, I would like to inform everyone that we have this amazing item on sale, called the (insert product spiel here)
by Malky the Kid November 23, 2015
PTPA is the abbreviated form of Permission To Post, Admin. PTPA is written on a post to show that special permission has been provided for the post, which otherwise would have broken a group rule.
by Marka Ragnos February 20, 2020
by Deraj June 08, 2022
by Alexa Joy Smithson April 16, 2010