A phrase usually used to signify a very serious comment.
Lets say that you're standing in the hallway joking with your friends when u realize ur late for class u would say something like: Yall niggaz be trippin, but on some real shit... I gotta go cause I'm about to be late.
by Jasmine Moore aka Peach June 7, 2006
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To be currently engaged in (blank) activity, or behaving in the manner of (blank).

NOTE: The exception to the grammatical syntax of this saying is when the word in the blank is "bullshit" or another word ending in "shit." In such a case the second "shit" would be redundant, so it is omitted, and the saying is simply, "on some bullshit."
"Now I ain't even on no rap shit no more.
I'm on some fuckin' you up shit when I see you.
And I will see you too."
-Eminem, "Girls"

Translation: "From the current point on, creating rap music is not not no longer my top priority. On the contrary, I will primarily concern myself with causing you physical harm the next time we encounter each other. As a footnote, rest assured that I such an encounter will indeed occur."
Notice the speaker's cunning usage of a triple negative in the first 'on some (blank) shit' which is meant to confuse the listener.

"But you on some bullshit, nigga.
This yo' last beer.
Get the fuck off my dick
And tell yo' bitch to bring her ass here."
-D12, "Blow My Buzz"

Translation: "However, my African-American acquaintance, the manner in which you are conducting yourself is not appropriate. Since you appear to be intoxicated, I will see to it that you do not consume another fermented malted barley beverage. I demand that you cease your excessive flattery and encourage your female friend to approach me."

"On some real shit.
I gotta be the best.
I gotta stay fresh.
I represent the West."
-Daz, "On Some Real Shit"

Translation: "That which I am about to disclose, I will disclose in absolute honesty. I must achieve the absolute pinnacle of my profession. I must remain stylish and continue to produce original material. I consider myself to be a personification of the entire Western region of the United States."
by Nicholas D October 22, 2009
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A phrase that indicates that the person has made some sort of significant change or has obtained something new. This could be anything from a relationship status change to obtaining something new/fresh or even suddenly bringing in a lot of money. It could pretty much be used to reference the recent purchase of fresh new anything such as weed or drugs. Or even a new job.
Person 1: Hey what up? What are you doing this weekend?

Person 2: Oh I'm on some new shit, hit me up.
by SKILLaTON August 15, 2010
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Doing, or acting crazy, Krunk, unapproiate, inapproiate, and or out of the regular aspect of things
yo bitch I was on some other shit at that Krunk ass party last night.
by fuckyocouch3369 April 29, 2008
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Shit that is funny. Normally this 'shit' is of verbal or physical type. And it makes people laugh emensly.
by Anonymous September 18, 2003
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1. being on drugs people are not customed to.

2. acting differently than the way people know you to. (being upset, or too hyper)
1. "she was on some other shit last night, i dont even know what that drug was called"

2. a: "why you on some other shit?"
b: "how im on other shit?"
a: "you all upset, for no reason"
by pro121c June 20, 2009
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