This is not a genuine quote from the former president’s mother. […] It appears that this quote was created and exists solely for the purpose of this meme.
[…]
To sum up, there is no evidence whatsoever that the former president’s mother called him “an idiot with zero common sense.” We therefore rate this claim “Unfounded.”
I’m gonna have to know if this is real. I mean, I know the words are true, but did his mother actually say that.
https://www.snopes.com/fact-check/trumps-mom-call-him-idiot/