Lol

LOL (also written with some or all letters lowercase) is an abbreviation for laughing out loud or laugh out loud. LOL is a common element of Internet slang used historically on Usenet, but now 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 such as ROTFL ("roll(ing) on the floor laughing"), a more emphatic expression of laughter, and BWL ("bursting with laughter"), above which there is "no greater compliment" according to technology columnist Larry Magid. Other unrelated expansions include the now mostly historical "lots of luck" or "lots of love" used in letter-writing.

LOL, especially lowercase 'lol', is also used as a prefix to create a disparaging remark, as in "lolpve", or "lolagon" ("lol" + "paragon"). This usage may have originated in the PvP community, and generally indicates the user's total lack of regard or respect for the object. It is often seen in discussions of skills or classes that the user finds extremely imbalanced or underpowered.

Trivia

 * The word 'lol' is an official Dutch word, meaning fun.