ROMLF is an acronym standing for Rolling On My Laughing Floor. It is an adaption of ROFL that puts emphasis on the fact that the situation is so funny that even the floor is laughing at it, or them, in the case of newbs. Generally used to trash talk bad players in online games.
N00B: don't be so rough with my anus
Max: ROMLF YOU SUCK
A person who tans excessively and bleaches their hair. Similar to a person's image in a photographic negative.
After three bleaching treatments and four hours a week under the sun lamps, Josh has become a negative.