Acronym which means laughing out loud: laugh out loud, be laughing. Saving trend of the current language both online and offline, there are many other acronyms, especially in English, such as TT, trending topics: topics discussed; BFF best friends forever: best friends forever; OMG!, oh my God: o my God; FYI, for your information: your ( his ) information; WTF!, what the fuck: what the hell!, which cones!, hell!