lmk — let me know g2g — got to go brb — be right back RT - Retweet AMA - Ask Me Anything TBH - To Be Honest IRL - In Real Life ROFL - Rolling on floor laughing STFU - Shut the *swear word!* up ICYMI - In case you missed it TL;DR - Too long, didn’t read LMK - Let me know NVM -  Nevermind TGIF - Thank goodness it’s Friday TBF -  To be frank RN - Right now QOTD - Quote of the day OOTD - Outfit of the day TTYL - Talk to you later HMU - Hit me up FWIW - For what it’s worth IMHO -  In my humble opinion IDK -  I don’t know TBD -  To be decided EOD - End of day AKA - Also known as ASAP - As soon as possible LMGTFY -  Let me Google that for you NP - No problem OOO - Out of office ILY - I love you MCM - Man crush Monday WCW - Woman crush Wednesday BF -  Boyfriend GF - Girlfriend CTA - Call to action UGC -  User-generated content SMS - Short message service MMS - Multimedia messaging service RCS - Rich communication services ROI -  Return on investment CTR -  Click-through rate 5G -  5th generation, meaning the newest generation of mobile communications