Idiot 

If you have to ask, you are.

Person 1: Hey! Do you know what "IDK" means?
Person 2: I don't know.
Person 1: OMG! No one knows!
Person 2: ... Idiot.

Idiot by Me? Nooo. I'm not sarcastic. May 4, 2009

Idiot 

To be a retard and moron.

That girl is such an idiot. She doesn't know all her 12 times tables.

Idiot by BaeDrivenInsane💋💔🔪🔫 March 13, 2015

Idiot 

The person who looks this up on Urban Dictionary.

That Mike guy was such an idiot, he looked up the adjective describing him on Urban Dictionary.

Idiot by BrazzersBananas July 17, 2015

Idiot 

A person with no sense .

a slow driver is an idiot.

Idiot by The spellerer April 6, 2017

Idiot 

Mentally handicapped person

Doesn't understand common sense

Andy: Hey Allen why are you looking to buy parts and drive to Miami to pick up a 20 dollar part.

Allen: we'll see what happens when you come to me looking for that part
Andy: what a stupid idiot I can go to Walgreens and get it there

Idiot by GomezAllen January 23, 2017

idiot 

pretty much you if you look on the Urban Dictionary in the middle of class

you are a idiot pierce

idiot by puddly04 March 1, 2017

Idiot 

A dumbass, bumfuck, retard, moron, fuckcunt, motherfucker, asshole or black man

John is an idiot

Idiot by Rockcroc October 11, 2017