a crying text emoji face, usually used on places like tumblr

“TWT” is used to express sarcasm or “being cutely” annoyed.
It is mainly used in games.

a emoticon showing that your are a gothic web or loli

An emoticon showing that you are a gothic loli or weeb

twt means Twitter Stans. twt can be added to pretty much anything. such as: k-poptwt (K-Pop Twitter Stans), mcyttwt (Dream Twitter Stans, Mostly), and marveltwt (Marvel Twitter Stans, which unfortunately exist.) They have selfie days like literally every day. Just go to the trending page.

It means Twitter or Tweet

Usually means "timeline? what timeline?" This term generally refers to a fanfiction that is out-of-timeline (see OOT) in other words a story where the canon timeline is not followed.