The sultan of the great nation known as Stfunoob, known for his wise decisions and harsh punishments. Also, it stands for "Rolling On the Floor Laughing My Ass Off Out Loud," which is a combination of ROFL, LMAO, and LOL.
All Hail the Grand Sultan Roflmaool of Stfunoob!
Person 1: Dude! The PBS in our city burst into non-profit flames!
Person 2: ROFLMAOOL!