imanidiot 

you are a poohead

imanidiot 'cos you are dumb

imanidiot by DIE or ELSE i will kill yoo November 3, 2020

imanidiot 

Someone who is incapable of completing even the most simplistic act.

"I dun get it. Wow... Imanidiot"

imanidiot by Chance Found December 24, 2007

I’manidiotandiknowit 

When your too lazy to write spaces:

Dude: I’manidiotandiknowit!!!
Other dude: bro get spaces I can’t read
Dude: waitithoughtitwaseasytoread
Other dude: COME ON

I’manidiotandiknowit by Pinkpumpkingoestothestoretobuy June 20, 2021

I'mAnIdiot 

Yes you are

person1: I'mAnIdiot
person2: Did you just realize that?

I'mAnIdiot by GiveMeAnAvailableName January 13, 2021