shit is going down

Moment in time shortly preceding defacation.

"Dude, you've been in there for the past hour. I need the toilet too, come out!"
"Sorry I can't, shit is going down!"
James Bond - Quantum of Solace

"My brow frowned
In strain
As the poo train
Came to town
Shit was going down"
Seamus Heaney - Childhood Memories

Shit or Go Blind

A drink consisting of prune juice and methanol that requires good decision making skills.

Meanwhile, at the first year cotillion...

Date: I'll have a Jägermeister and Red Bull
You: I'll have a Shit or Go Blind
Date: Do you smell something?

Shit Go

A phrase commonly used among Anglo Saxon, Sydneyites.
The phrase describes an action or circumstance in which causes negative reprocussions for the user.

"That bloke slashed your tyres? Damn mate, thats a shit go."

that shit go

"In other words cool or tight or phat"

Like when you hear a song you like you'd be like you hear that new song that came out THAT SHIT GO!!!

Oh Shit I'm going to die syndrome

defined in "How to roll a blunt for dummies"
so high, you dont enjoy the high, but just feel that death is near, usually experienced when smoking some really dank weed.

Kid 1: Oh dude, whats wrong with me? OH GOD, WHATS WRONG WITH ME?!

Kid 2: Chill out man, you just have Oh Shit I'm going to die syndrome, just go to sleep.

shits going down

when the anticipated event finally takes place right in front of you, this means that "shits going down".

joe and mike have been talking trash and now they are about to throw ones, finally! shits going down!

Shits going down

It's whenever your in a conversation and you say this phrase, your ass blows up with shit

Man: Aye dick head!
Friend: What u say to me nigga?
Friend: Call me that one more fucking time and shits going down