I can't remember the name of it but the hardest rap song ever is about this dude who swings through the hood and acts like a spider shooting webs and shit. Think it was by another bad creation.
Really depends on how your taking the word, "hard." It could be Gansterish or it could mean that you driving in the car & either of those songs come out on Pandora & you get that rush & say to your homeboy sitting shot gun, "Ugh! Yeah! Remember this shit? Shit's hard."
Run DMC said it best, "Not bad meaning bad, but bad meaning good."