Commonly used abbreviations on Imgur, Reddit, and Tumblr.
Adam Rifkin stashed this in Imgur!
Stashed in: Tumblr!, Young Americans, Reddit!, Best PandaWhale Posts, Words!, Teh Internets, Awesome, !!! PRO TIPS !!!, The More You Know, Reaction GIFs!, NSFW!, tl;dr, Best of Imgur, RTFM!, Upvote! Downvote!, MFW
MRW = My Reaction When. Alternative: YRW (Your Reaction When)
MFW = My Face When. Alternative: YFW (Your Face When)
TIL = Today I Learned. Alternative: YIL (Yesterday I Learned)
tl;dr = too long; didn't read. Also called "teal deer".
SMH = Shaking My Head
OP = Original Poster
NSFB = Not Safe For Breakfast/Bedtime (particularly disturbing or gross)
NSFW = Not Safe For Work (nudity or sex)
FTW = For The Win. Alternative: FTL (For The Loss)
OC = Original Content
TIL the Internet has a language all its own...