o shi 

Used when something bad is about to happen, but you don't have time to finish what you were saying because it happens and you are either dead, or otherwise unable to finish what you were saying.

(Online Chat Conversation)
Trevor: Brandon! Riley snuck over to my house and has a gun! I THINK HE IS GOING TO KILL ME!
Brandon: Are you serious?
Trevor: O SHI

o shi by Brandon Werner May 17, 2006

o shi- 

When something you don't realize is about to happen. And by the time you relaize it, it's too late.

It doesn't necessarily have to be fatal, because sometimes it is used in day-to-day instances

Man opens box, sees bomb:
"O SHI-"

Student1: *catches breathe* I can't believe I made it to the bus on time!
Student2: Where's your backpack?
Student1: O SHI-

You search "Where is Chuck Norris" on Google:
"O SHI-"

o shi- by penguinat4 September 13, 2009

O Shi- 

Pov: u don't get to finish ur sentence

Johnny: *breaks mamas favorite pot

Mama: Im gonna BEAT UR ASS. GET OVER HERE BOI.

Johnny: O Shi- *coffin dance plays

O Shi- by - Your Mum - 　コキッチ April 1, 2022

WSJ O Shi 

An exclamatory used to express surprise, disgust, a liking of something, or a dislike of something.

Did you see that guy having sex with an alpaca? WSJ O Shi!

WSJ O Shi by Vidin July 24, 2008

I/O shield blood sacrifice 

A term used when building a computer, specifically when Installing the I/O shield, and cutting yourself, as they are notorious for being sharp.

Ex. of the "I/O shield blood sacrifice"

Man: I was about to throw the whole tower against the wall! I felt like such an idiot. The IO shield is evil and requires a blood sacrifice!

Friend: It really is. I did a case transplant on Friday and it took blood even just for being moved from one case to another.

I/O shield blood sacrifice by TheNightAngel June 5, 2013

O shit waddup 

A phrase spoken after dat boi says "here come dat boi." The phrase and meme were popularized in April 2016.

Here come dat boi!
O shit waddup?!?

O shit waddup by funwillfunwill May 16, 2016

big steaming pile o'shit

Something Of Terrible Quality

Dude, this Creed Album is a big steaming pile o'shit

big steaming pile o'shit by heavysteve May 12, 2008