Sure that works in the short run, but have you ever tried it against an entire Purble Blanket tribe? Unless you´re a ghost or some sort of wierd undead zombie, I very much doubt it.

The thing about LOL is that some people use it everywhere, even when they can´t possibly be laughing out loud.
For example: "I´m getting my ass kicked by the Romans lol"
"I´m really tired after school today lol"
"I´m feeling fuc*ing depressed and think I´m gonna go kill myself now, seriously, I am, I´m not joking or anything, I´m gonna go jump of a bridge. Lol."

Okay that last part was a bit over the top, but you get the idea, or so I hope.