im pretty sure the T in GTG does not translate to the number 2.
gtfo means get the forget out.
rolling on the floor laughing is rofl.
But in all seriousness, this will definitely help all the grandmas playing blockland. Even though most grandma's nowadays know how to use google. and there are next to no grandmas playing Blockland. and people trying to find the meanings of these will probably not stumble upon this thread, instead one of the many dictionary sites explaining all of them perfectly...
