Meaning

1 senses
  1. (Internet, Leet, dated)Used to express laughter, often in a sarcastic fashion.

    1999:"you mean "C"hina??? lolz!!!" — http://groups-beta.google.com/group/talk.politics.tibet/msg/74bdbd4eb17f4b22

Origin

A corruption of lol, probably a leet variation, treated as if it were a noun rather than a

A corruption of lol, probably a leet variation, treated as if it were a noun rather than an interjection and pluralized in a deliberately unconventional manner using the -z suffix.

Wiktionary, CC BY-SA 4.0 · source

lolz — meaning, examples, forms, synonyms | Krumeto