onosecond 

The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.

Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -

onosecond by Jimmed September 26, 2006

Onosecond 

An Onosecond is defined as the second after you realise you have done something that is embarrassing or bad.

Examples where an Onosecond can kick in:

Text message contents: A sexy message or a picture of your private parts.
Recipient: a family member.

Seeing a typo in an important essay just after you have sent it.

Accidentally revealing a surprise to someone because you were distracted.

Onosecond by jackqueslack23 July 29, 2020

onosecond 

The “onosecond” is the second after you make a terrible mistake. The second when you realize what you just did and that there’s nothing you can do about it, the second when all the now-inevitable consequences flash through your mind. It is the second after you send a sexual text message to the wrong person, after you delete the wrong file, after you spill the secret that you thought they already knew. The “onosecond” is that stomach-dropping, breath-stopping moment when all you can do is say “oh, no”.

Engineer: accidentally deletes an entire content database

Engineer: *has an onosecond*

onosecond by Goootz March 18, 2023

Onosecond 

That one moment when you realize you absolutely fucked up and there's no way back, that makes you go: Oh, no.

Dan: You look a bit shaken up, man. What's up?

Todd: I really fucked up today, man. I spilled coffee on my work laptop while working and lost a lot of data. I swear, that was the biggest onosecond I've ever had.

Onosecond by Jugemu Jugemu Goko no Surikire April 6, 2021

onosecond 

The onosecond is the moment where you have made a horrendous mistake, but it's just too late to intervene.

The onosecond is named "onosecond" because it refers to itself, that second that makes you say: "Oh, no."

Person 1: "Did you remember to turn off the oven before you left the house?"

Person 2: "Oh, no."

Person 1: "That's an onosecond right there."

onosecond by jorgeevadestaxes May 28, 2022

onosecond 

the second after you realize you were tricked, played or being dumb and fell into a situation that makes you go 'OH-NO'.

named after the phrase 'oh no' as shown with the letters ono.

person 1: 'i love pineapple'
person 2: *pulls out knife*
person 1: 'this is my onosecond.'

onosecond by anonymous December 7, 2021

onosecond 

the word you can't lose and it shows up on every definition.

Onosecond shows up on some random definition

Me: No, shut the fuck up

onosecond by EpicGamer304321 July 14, 2020