>>45422852An OP from months ago used it, and it's was well-received because it was kinda funny and original. People in replies typed "kek" to it enough times that the OP got an ego-boost.
He then spammed it endlessy because he wanted the same affirmation he got before, but sadly for him, it is no longer original or funny. It's now a forced meme out of spite.
At this point it's probably has spread to other shitters who have a similar reddit-tier circlejerk sense of humor.