This is one of the saddest scenes in shameless for me. The way Lip goes on these rants, all Frank style, is hearbreakin'. And while I normally feel like I understand Ian the most out of the characters from the show (being bipolar and doing crazy shit while 'm not fully myself), I also know a thing or two of being exactly like your father in the worst way possible.
Paramore’s Ain’t It Fun has such big “villain gloating at hero who’s been brought low” vibes that like, half the time I hear it my brain supplies sketchy 2d cartoons of Maul mocking Obi-Wan post-Prequels.
Protagonists or heroic supporting casts could sing it too but it feels like the kind of mean that usually only villains are allowed to let loose with.