Board Thread:Questions!/@comment-73.175.25.202-20170215015901/@comment-27169623-20170215143251

An admin of an account is basically the person in change of it, managing the account. You typically see people refering to themselves as admins when they're a roleplay account.

OORP stands for Out Of RolePlay, that's also a term that's almost always used by roleplay accounts when they change their profile picture to one of themselves and basically stop being their muse for a little while.