Mmm! That's good anger-apple! The speaker's anger is simultaneously attractive to his foe, and it's also clearly identifiable as to whose apple it is. This makes us think that anger can be attractive to others in the sense that it attracts the anger of others (You're mad at me? Well, then I'm mad at you!). Our anger, too, is not an anonymous creation. It's recognizable to others, in part because it's so deeply seated in our personalities. Scary.