LFNR - Laughing For No Reason. People say this instead of using "lol" all the time, since "lol" is always overused.
its some number: LOL, i just hear this uber joke that pwnzorz
its some number: want to hear it?!11
xkookie T tofux: uh sure
its some number: LOLZZZZZ WHY DID THE CHICKEN CROSS TEH STREET?!!?!?111
xkookie T tofux: why..?
its some number: CUS IT NEED TO GET TO THE OTHER SIDE, ROFLZZZ!!!!11111
xkookie T tofux: lfnr... not even funny -.-