It’s basically a “first time reader” for a new book,

and #rr means re- reader so that means that you are reading the whole book again

A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.

FTR - Chat acronym for "For the Record".

Fuck The Revival

For The Record.