Here's how Donald Trump could actually bring a smile to T.I.'s face -- even though he remains a staunch opponent of the President-elect.
Tip was at LAX when our photog posed a question about grading the President's performance. Problem is ... he had a major slip of the tongue while spitting out the question.
T.I. got a good laugh out of it -- and we did eventually get his grade for the Prez.
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