Some people might think lel is a typo, but lel actually mean L.augh E.ven L.ouder. It is sometimes used as the way its defined, but also because some people get bored if the basic LOL.
Person 2: *slaps Person 1*
Person 1: Lol.. That wasn't smart... *gets ready to fight*
Person 2 : Lel... I think it was.. *gets ready to fight*
A fight ensues..
Person 2 Obviously wins because they used the superior variant of Lol.