LOL, or lol, is an initialism for laugh(ing) out loud and a popular element of Internet slang. It was first used almost

An example of the use " LOL", Lolcats.
exclusively on Usenet, but has since become widespread in other forms of computer-mediated communication and even face-to-face communication. It is one of many initialisms for expressing bodily reactions, in particular laughter, as text, including initialisms for more emphatic expressions of laughter such as LMAO ("laugh(ing) my ass off") and ROFL (or its older form ROTFL; "roll(ing) on the floor laughing"). Other unrelated expansions include the now mostly obsolete "lots of luck" or "lots of love" used in letter-writing
The list of acronyms "grows by the month", and they are collected along with emoticons and smileys into folk dictionaries that are circulated informally amongst users of Usenet, IRC, and other forms of (textual) computer-mediated communication.[11] These initialisms are controversial, and several authors recommend against their use, either in general or in specific contexts such as business communications.
The Oxford English Dictionary first listed LOL in March, 2011
Acceptance[]
On March 24, 2011, LOL, along with other acronyms, was formally recognized in an update of the Oxford English Dictionary.In their research, it was determined that the earliest recorded use of LOL as an initialism was for "little old lady" in the 1960s. They also discovered that the oldest written record of the use of LOL in the contemporary meaning of "Laughing Out Loud" was from a message typed by Wayne Pearson in the 1980s, from the archives of Usenet.
Gabriella Coleman references "lulz" extensively in her anthropological studies of Anonymous.
A 2003 study of college students by Naomi Baron found that the use of these initialisms in computer-mediated communication (CMC), specifically in instant messaging, was actually lower than she had expected. The students "used few abbreviations, acronyms, and emoticons". Out of 2,185 transmissions, there were 90 initialisms in total; 76 were occurrences of LOL.
LOL, ROFL, and other initialisms have crossed from computer-mediated communication to face-to-face communication. David Crystal—likening the introduction of LOL, ROFL, and others into spoken language in magnitude to the revolution of Johannes Gutenberg's invention of movable type in the 15th century—states that this is "a brand new variety of language evolving", invented by young people within five years, that "extend[s] the range of the language, the expressiveness [and] the richness of the language". However Geoffrey K. Pullum argues that even if interjections such as LOL and ROFL were to become very common in spoken English, their "total effect on language" would be "utterly trivial".