ROFL most times means- rolling on the floor laughing...you are on your own with the other one as I have no clue
rofl is rolling on the floor laughing, usually as roflmao the mao part is my ass off so it comes to Rolling On Floor Laughing My Ass Off
i believe the RV in rvbvdfj stands for Rubber Vagina...i think the D stands for dildo....i can't remember the rest..... and no, im not joking