This is a fun question. I grew to type everything properly in french in my texts so I’m bad at this but here is what I remember or still catch in other people’s texts.
How To (Badly) French Text 101 – The basics
MDR: Mort de rire (Dying of laughter)
SLT: Salut (Hi)
BJR: Bonjour (Hello)
DSL: Désolé(e) (Sorry)
JTM: Je t’aime (I love you)
RPZ: Représente (Represent. It’s some kind of a joke)
OKLM: Au calme (chill)
TKT: T’inquiètes pas (Don’t worry)
DTC: Dans ton cul (in your ass)
VTF: Vas te faire (go fuck yourself)
RAF: Rien à faire/foutre (I don’t care/give a fuck)
SMS: A text/message
And that’s all I could think of
I always loved “plop”, which is a common greeting in French MMOs, basically “salut”. You might enter a battleground on World of Warcraft and see a million people saying “Plop!” “PLOP” in the chat, which sounds ridiculous in English.
I remember asking “Why is everyone saying “plop” and “murder” (MDR)?”
My French friend also taught me some more:
TG: Ta guele (Shut up)
PTN: Putain (F*ck)
STP: S’il te plaît (Please)
Also: BSR: bonsoir (good evening) CAD: c’est-à-dire (that is to say) A+: à plus tard (see you later) EN+: en plus (on top of that)