字母J：

　　J/C = Just Checking

　　J/K = Just Kidding!

　　J/W = Just Wondering

　　JAFO = Just Another Fing Onlooker

　　K/KK = OK/OK, OK

　　KFY = Kiss For You

　　KISS = Keep It Simple Stupid

　　KIT = Keep In Touch

　　KMA = Kiss My Ass

　　KWIM = Know What I Mean

　　KX = kiss

　　KYPO = Keep Your Pants On

　　字母L：

　　L8R = Later

　　LD = Long Distance

　　LDTTWA = Let’s Do The Time Warp Again

　　LLTA = Lots And Lots Of Thunderous Applause

　　LMAO = Laughing My Ass Off

　　LMK = Let Me Know

　　LOL = Laughing Out Loud/Lots Of Luck(Love)

　　LTIC = Laughing ’Til I Cry

　　LTNS = Long Time No See

　　LYL = Love Ya Lots

　　LYLAS = Love You Like A Sister