I'm going to have to give you a duh on that! 

Anytime one person says something silly or dumb that everyone around them knows to be true or fact about the person talking.

Senario 1:
Me: Man I'm sleepy.
You: Your always sleepy.
Me: I'm going to have to give you a duh on that!

I'm going to have to give you a duh on that! by Evilness666 November 14, 2005

i'm going to phalanx you macedonian style 

I'm going to defeat you with the utmost originality and perfection.

Jon: Ramble Ramble Ramble, screw you guys, I'm going home.
Tal: Jon, I'm going to phalanx you Macedonian style.
Teacher: I'm not sure whether to send you to the principles office or give you commendation.

i'm going to phalanx you macedonian style by TDMORGAN December 16, 2015

I'm going to kill myself 

Expression

Something that especially a suicidal person would say to underline that they have gone through a lot and are not able to mentally or physically keep up with the current situation anymore.

My life is nothing but endless suffer, I think I'm going to kill myself

I'm going to kill myself by by the Reaper July 23, 2018

I’m going to die if I don’t get something soon 

I’m starting to wonder if I am hopeless :(

I’m going to die if I don’t get something soon

I’m going to die if I don’t get something soon by Zatarain’s Root Beer Drinker January 10, 2021

I'm going to drive a railroad spike through my skull 

A phrase often said after a friend or loved one has said something so incredibly so atrocious you would feel better off just not being there.

Often used in place of phrases like "Shut the fuck up" "That was the dumbest thing I've ever heard" and "You are a disappointment."

Beta: "That's pretty poggers!"

Schligma: "I'm going to drive a railroad spike through my skull."

I'm going to drive a railroad spike through my skull by WatterBottles February 10, 2022

i'm going to fucking kill you 

when kill

"i'm going to fucking kill you" - slendermens

i'm going to fucking kill you by a very unique name July 21, 2022

I’m going to rage-quit my life 

Meaning: I’m going to angrily end my life

You know what, I’m going to rage-quit my life

I’m going to rage-quit my life by DJ_little_GOOSH_GOOSH August 23, 2022