Also found in: Acronyms.
slang An initialism of "rolling on the floor laughing," used in text-based communication to indicate that something is very funny or ridiculous. Often lower case. More commonly seen as "ROFL." I just saw a monkey riding on the back of a pig! rotfl
interj. rolling on the floor laughing. (Used in electronic mail and computer forum or news group messages. Not pronounced aloud.) I was ROTFL when I read your note. That was too much.