Generally speaking, LOL means laugh out loud, and has become a somewhat over used expression in today's online society.
Now it has even seeped into face-to-face conversation, resulting in lol being said after every sentence. Therefore, if you replace the word LOL with the meaning of CUM, things get interesting.
person who does not know the new meaning and is so using LOL as a "cool" word to use: LOL the bed, man
person who does know the meaning of LOL: me, i just use a tissue