Mark Twain

You've been deceived. Don't take my word for it, find out for yourself: when did Mark Twain say that?

Don’t know when but is attributed to him on multiple sites that deal with quotes. He may have used fool instead of deceive though.

Perhaps not:

https://quoteinvestigator.com/2020/12/23/fooled/

But I personally don't know, so,,,,,,

He did not. In fact, he didn't say it at all. You've been deceived.

And the irony seems to be flying completely over your head.

Ok, so the OP didn't know, I didn't either, had looked it up and read it in that link after seeing this...

Oohhh…😎

Hey, it happens. I do it all the time. a lot!