Oh no it's a gundam 

This phrase is often used in the Gundam Anime series. A typical grunt will point out the window of his mech and say "Oh no it's a gundam!" and then shortly blow up as a result.

This phrase indicates the massive power of a "Gundam".

"Oh no it's a Gundam!" * BOOOM *

Another acceptible version...

"Oh no it is a Gundam!" * BOOOM *

Oh no it's a gundam by LiquidZ November 2, 2005

Oh no, I just wound you. Don’t tell me you’re broken. So not fair. I’ve taken extra good care of you and everything. 

A ptsd trigger for those who are very cultured.

"Oh no, I just wound you. Don’t tell me you’re broken. So not fair. I’ve taken extra good care of you and everything..." Jane said
"Never say that again!" James shouted with fear in his eyes.

Oh no, I just wound you. Don’t tell me you’re broken. So not fair. I’ve taken extra good care of you and everything. by anonymous January 9, 2021

ohnosecond

The momentary panic that occurs when something irreversible goes wrong. Can also be used to describe something that turns out to be reversible although you were worried at the time it wasn't.

1.Dave sent his girlfriend pictures of himself with another woman, by accident, regretting it an ohnosecond later.
2. I experienced an ohnosecond when i realised my head was stuck between the railings.

ohnosecond by brianriot July 14, 2006

oh no 

A phrase you don't want your girlfriend to say at anytime ever.

1) Lisa: "Oh no!"
John: "WHAT?"
Lisa: "I'm pregnant!"

oh no by J3553ROCKS April 29, 2009

Oh no what have I done 

What I find myself saying far too often on Saturday/Sunday/ Monday mornings

Oh no what have I done, I seem to have two pairs of underwear on and no shoes..where are my keys I've lost my phone

UH OHHH OOHHHH

Oh no what have I done by fancyratsahoy October 19, 2009

oh no 

you say it when something bad happens

person 1: your neighbor just rolled over your baby with their car

person 2: oh no

oh no by emrf0518 April 4, 2016

oh no niall 

When Niall Horan famously fell over when playing golf and the interviewer said oh no niall.

Or in the that's what makes us 1D karaoke "I fell over playing golf" "oh no niall"

"oh no niall"

oh no niall by cat.young May 3, 2021