IKILYDIBAFTMS Is an acronym for "I know I've let you down, I've been a fool to myself".
It often means the person that is saying this regret something they've done and are emotionally unstable. You might hear it from your mentally ill friend after they treated you bad or ignored you.
-Dad! How could you abandon me, ignore me and abuse me in every single way possible!
-Ikilydibaftms, now get in the robot son.
-Okay dad, I'd do anything to make you proud!
I finally won the war, it was hard, but i snuck passed the chungy guards and assassinated chungus. not much left of him except his penis that I cut off. luckily i still have mine :) faggy
People say that this man is one of the greatest player to have ever played League of Legends. His champion pool is so wide, with unique and challenging champions such as: Malphite, Master yi and RENEKTON. No one knows his true identity, but his named is echoed throughout all challenger ladders, because it is said that he once managed to hit rank 1 of every challenger ladder across every server. Even Faker-senpai acknowledges his greatness.
wow, are you IKiLL3DYoUNooB? Cuz that play was godlike