Its a play on words, where the word "Life" is expected but it is too short in the sense that the physical spelling of the word "Life" is only 3 letters "
Lif". Therefore, instead of responding to one's facebook status that says "
Lif is too short" with "Agreed", respond instead with "
Ahahahahahaha!!! Nice!!"
Human A:
Lif is too short
Human B:
Yeah, you only spelled it with three letters, of course its
too short!!