It's short for permanent curls. It's what women do when they go to the salon to curl their hair. "Permanent" is a misnomer, as the perm doesn't last forever. But it does last a few days. It could also refer to permanent clan members. This is when people join a clan and stay there permanently. Hope this helps.
perm pərm/ noun 1. a hairstyle produced by setting the hair in waves or curls and then treating it with chemicals so that the style lasts for several months. "I had a perm on Friday" verb 1. set (the hair) in a perm. "her hair was permed and then set"
Perms are permanent members of clans. The more you know. To celebrate your knowledge, here's a picture of Temmie. Edit: h0i im t3m
I think im gonna adapt the upside down 'e' permanently in my messages. I just got to figure out how to flip the phone over faster.