Technical Twitter abbreviations:
MT = Modified tweet. This means the tweet your looking at is a paraphrase of a tweet originally written by someone else.
RT = Retweet. The tweet you’re looking at was forwarded to you by another user.
DM = Direct message. A direct-message is a message only you and the person who sent it to can read. IMPORTANT: To DM someone all you need to type is D username message.
PRT = Partial retweet. The tweet you’re looking at is the truncated version of someone else’s tweet.
HT = Hat tip. This is a way of attributing a link to another Twitter user.
CC = Carbon-copy. Works the same way as email.

Conversational abbreviations:
IMHO = In my humble opnion.
AYFKMWTS = Are you f—ing kidding me with this s—?
GTFOOH = Get the f— out of here
OH = Overheard.
NFW = No f—ing way
IRL = In real life
NSFW = Not safe for work.
FML = F— my life.
FWIW = For what it’s worth.
QOTD = quote of the day
BTW = By the way
BFN = Bye for now
AFAIK = As far as I know’
TY = Thank you
YW = You’re welcome

Tack till the War Room.