I don't know about that one chief 

A phrase that is slang for no, normally used when in relation to an activity

Ex.1
Guy 1: aye, pass the bong
Guy 2: I don't know about that one cheif
ex.2
Guy 1: ay bruh, can you pull out?
Guy 2: I don't know about that one chief

I don't know about that one chief by 20$ is 20$ September 18, 2018

I don't know about all that 

An expression indicating extreme doubt, often implying that the suggested idea was a terrible or unwise one.

"Dude, would you do acid if I offered you some?"
"I don't know about all that."

I don't know about all that by Paul L-K (while blunted) March 22, 2005

I don't know anything about that 

An expression indicating extreme doubt, often implying that the suggested remark was untrue, a backhanded stab by passive aggressive speaker who won't come out and say they think you are full of crap.

Synonyms: Passive Aggressive, Liar, Full of Shit, Full of Crap, Calling Bullshit, Bullshit, BS

Antonyms: Truth, Open, Direct, Honest

Related words: Mother In Law

Normal Guy: "Unemployment went down this month again."
Passive Aggressive Guy: "I don't know anything about that."

I don't know anything about that by DILUnderSiege May 19, 2010

I don’t know too much about that 

It’s basically disagreeing with someone’s idea or statement

Friend 1: Hey, I found these cool suede pants at a thrift store. What do you think?
Friend 2: I don’t know too much about that

I don’t know too much about that by sandrafizzle January 23, 2020