The Brief: Stunting on means showing off.
To stunt on or to be stuntin’ on is to put on airs or to be fronting on. AKA Flex.
He’s stunting on us and I’m not even mad pic.twitter.com/FVF662L6Rr
— Best of Dolan Twins (@BestOfDolanTwns) September 1, 2018
Hard to be humble when you stunting on a jumbotron –Kanye West, “Devil in a New Dress”