The phrase "(@) me" is typically used in tweets and other social media to represent coiled anger. Here, Playbli Carti fires quick-blast lines about how his adversaries live falsified lifestyles. He doesn't consider them to be truly street tough and because he considers himself to be more macho than them, the rapper can disregard their hate.
Playboi warns his enemies they don't know who they're testing; he rides armored with an AK-47 and is ready to go to war over bricks (money). However, the Atlanta MC is not willing to use his weapon when the issue concerns girls.
The vintage video game-style beat is courtesy of frequent DaBaby collaborator jetsonmade as well as Neeko Baby and Deskhop. None of them had worked with Playboi Carti before.
The song features an accompanying music video directed by Playboi Carti and photographer Nick Walker, who shot the rapper's Die Lit album art.