Jj0, j00 - you
jeez, jeeze, jiz - Jesus
jk, j/k - just kidding
Kkewl - cool
kma - kiss my ass
Ll33t - elite - works as a noun as well as an adjective, also spelled: 1337; practically non-existent in the form spelled with normal letters (‘leet’)
l8r, l8a - later
lamer, llama - (1) loser; (2) an unskilled pla
lame - (a) something that does not take skill, the word has a pejorative connotation; the state of being lame
LAN - LAN tournament or event
lo - hello
lol - laughing out loud
los - line of sight
lmao - laughing my ass off
lpb - (1) low ping bandwidth, (2) a low ping bandwidth pla