A short abreviation for "leave me the fuck alone bitch" normally used in a stressfull scenario.
**consentrating**
Friend:Do you want to go and eat somewhere.
You:LMTFAB!
Someone or something you use or talk to in times of bordem
Kieran: aww so you want this covo to hold i feel so honoured
Kotryna: idc tbh im kinda bored so
Kieran: so im your bored token wowww
Kotryna: what no (sarcastically)