I have no recollection 

Typically invoked by governmental officials during sworn testimony to the U.S. Congress to deny potentially damaging -- politically and/or criminally -- behavior.

From the 1994 film "Clear and Present Danger" starring Harrison Ford:

Jack Ryan: Who authorized this?
Robert Ritter: I'm sure they'll ask you that.
Jack Ryan: Who authorized it?
Robert Ritter: I have no recollection, Senator

I have no recollection by LetsGoOakland April 4, 2007

no really 

no really is sarcasm used mainly for when somones says somthing obvious

another way to say no really is no shit sherlock or the longer version (wich i recommend to the pro's of sarcasm) is no shit sherlock when did you figure that out?

hope this helps

bob:dude you just got hit in the nuts bro

obb:NO REALLY?

no really by just tht guy in your alley way February 14, 2012

no not really 

Yes but I don't want to hurt your feelings

Girl: Does this make me look fat?
Guy: No not really

no not really by PaladonBaron December 11, 2016

No not really 

I’m sarcastic like that

No no not really. Nah

No not really by Zatarain’s Root Beer Drinker November 22, 2020

No not really 

I just do this for kicks

No not really

No not really by confused cajun man February 2, 2021

There really is no hope for some people

Good God, these people HAVE lost their minds.

There really is no hope for some people

Most of them are soooooo fucked

There really is no hope for some people by Rude Crude but Earnest Dude December 11, 2020

I really don’t need no light to see through you 

I really don’t need no light to see through you. — A brutal way to tell someone that they are absolutely transparent. This idiom entered popular culture in 1982 as a result of the quite danceable late disco track by the same name sung by vocalist Jeffery Osborne.

A useful insult in an age of MAGA Republicanism.

A more contemporary version of this is insult is the more versatile “I see you” — which can either be an insult or a statement of deep connection and engagement.

When Dolt 45 says that if he’s elected he will be MAGA’s retribution, I’ll just say this: I really don’t need no light to see through you, Donnie.

I really don’t need no light to see through you by Mind Hunter the Profiler July 30, 2023