doi 

A synonym for the word duh

Person: is cheddar a cheese?
Me: doi

doi by Ameliadanbo June 27, 2019

doi 

a term used to say to a person if they say something dumb

Person* Hey, did you know that The Rock isn't actually a rock!
Me* WELL DOI!

doi by THE_SMARTEST_PERSON_ONLINE January 18, 2015

doi 

an exclamation, related to "duh"

No shit!

doi by Anonymous January 27, 2003

Doi 

An 80's term, relative to the phrase "no sh*t" also refering to a dunce or someone who is very stupid. the word "no" is usually added as no doi!

Johnny's station wagon is cool.
No Doi you tard.
or

Is Johnny's wagon retro? Doi of course it is, you frigg'n idiot!

Doi by rtreverend May 31, 2009

Doi 

Something you say when doing something retarded.

Tom:Hey, wanna see somethin' cool?
Josh:*sigh* Whatever...
Tom:*walks up wall* Doi!
Josh:Why do I hang out with you?

Doi by CompletelyRetarded June 30, 2010

doi 

like saying duh except kewler.

"Did you know that Kacey is going out with Anthony"

"doi"

doi by guitar chick January 14, 2009

Doi 

Doi; (dōy); n

a small version of a doider. A reference to the abdomen or stomach, regardless of size up to a certain point where the doi then becomes a doider.

Also an adequate alternative for: dude, guy, grub

"those lawn doi's cut grass pro nuff."

"she's cute, but she's got a bit of a doi on her."

Doi by Dirty danchez June 29, 2009