by jisung OHHHHHHHHHHHH October 16, 2020

1) A typical ending to a brainless teenage girls' photo album, such as "Summmer 0999" or " City with the bfffs 09". Because of this, it has now become a common phrase used to bash popular culture that constantly refers to the year 2009. It works best as a sassy ending to a statement, and should usually be used in tandem with a peace sign held uncomfortably close to the face.
Colin: "Hey, what are you doin today?"
Eddie:" Endless amounts of college stuff.....OH nine!!
or
Colin: Margie that food looks sooo good!
Margie: Yayy overweight!
Colin: Oh nine?
MArgie: hahaha yes.
Eddie:" Endless amounts of college stuff.....OH nine!!
or
Colin: Margie that food looks sooo good!
Margie: Yayy overweight!
Colin: Oh nine?
MArgie: hahaha yes.
by Linnn Linnn November 29, 2009

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

by Chimmy Chongaa October 14, 2019

Tim: She asked me out and I can't believe I said 'no'
Tom: What!!??
Tim: Gotta complete my paper or else I'll flunk and not even graduate this year
Tom: Oh the joy!
Tom: What!!??
Tim: Gotta complete my paper or else I'll flunk and not even graduate this year
Tom: Oh the joy!
by theoxbow November 7, 2015

A curse often used by chess player and Twitch streamer Anna-Maja Kazarian during her streams after she blunders or find herself in a losing position. It's used instead of commonly used curses which some people might find disturbing.
by Shoarmapizza October 20, 2020

by riqel November 9, 2021
