The word "id" means "I'm Doomed". For example think you are playing games with your friend/s and someone is attacking you and you have low health,so you say "I'm Doomed" because you are about to die so..
*you are afk
Friend: Oh no!
Me: *afk
Friend: Someone is attacking you!
Me: Ok i'm back Me: OH GOD I HAVE LOW HEALTH !!
Me: id :(
This is a shorter version of “idiot”, the root for the word “id”. This is for those whose vocabulary usually consists of some form of insult toward another.
Derived from the word "idiot". Someone who mistakes the obvious so often that those around him/her do not go even through the trouble of calling them the three-syllable word "idiot" anymore.