Wrong!
“Flat wrong” implies something is demonstrably inaccurate or incorrect. It signifies that the information, statement, or argument is clearly and completely false. It’s a strong term indicating a lack of validity or truth.
Psalm 12:1 -5
For the choirmaster. According to Sheminith. A Psalm of David. Help, O LORD, for the godly are no more; the faithful have vanished from among men. 2 They lie to one another; they speak with flattering lips and a double heart. 3 May the LORD cut off all flattering lips and every boastful tongue. 4 They say, “With our tongues we will prevail. We own our lips— who can be our master?” 5 “For the cause of the oppressed and for the groaning of the needy, I will now arise,” says the LORD. “I will bring safety to him who yearns.”