by Noremacguy1993 June 4, 2009

Said when something is too awesome for all other words or word phrases. Can be used as an adjective, noun, or a verb. When you say it, you must exclaim it in a high pitched, enthusiastic voice. If you use it wrong, you're dumb.
The opposite is Oh Never! Which is used when you are describing or reacting to something that is terrible or something that you would never do.
The opposite is Oh Never! Which is used when you are describing or reacting to something that is terrible or something that you would never do.
Noun: "She's an Oh Definitely!"
Verb: "I would Oh Definitely her!"
Adjective: "That girl is so Oh definitely!"
Or simply: "OH DEFINITELY!!"
Verb: "I would Oh Definitely her!"
Adjective: "That girl is so Oh definitely!"
Or simply: "OH DEFINITELY!!"
by Big D Magic June 25, 2010

It is an expression that represents positive astonishment in the following situation: When someone mentions a future event that is too good to be true and people do not expect it to actually happen, but this person unexpectedly and casually returns with the realized result.
Person A:"I think I am going to start a brewery"
Person B:"Yeah why not."
Person A and B meet again a few months later
Person A:"Oh yeah by the way, I started my own organic brewery business. We're going to start selling our products at Whole Foods."
Person B: "Oh! Sundo!"
Person B:"Yeah why not."
Person A and B meet again a few months later
Person A:"Oh yeah by the way, I started my own organic brewery business. We're going to start selling our products at Whole Foods."
Person B: "Oh! Sundo!"
by jasonmagniig December 31, 2020

What someone says when something goes wrong, or something unexpected happens. Can also be used after someone gets roasted.
by Hello12345678987654321 October 8, 2017

Milf, sorry, milfy, sorry, milfy milf, sorry, I meant to say mommy, no, Sandra oh. She’s a milf mommy and she’s got the sexiest hair of all time. She likes to stick her tongue down Jodie comers throat and likes living in woman's vaginas.
She’s a very sexy, very talented daddy who plays eve polastri in killing eve. She loves to make out with Jodie comer and squeal in the back of vans.
She’s a very sexy, very talented daddy who plays eve polastri in killing eve. She loves to make out with Jodie comer and squeal in the back of vans.
by Villanevesslugussy May 17, 2022

by man who is crying April 7, 2020
