The act of fucking up someone's shit to the point they can no longer continue to live with them selves because of how bad someone just ruined their day
To rustle (subject)’s feathers is to get under their skin to the point of annoyance, where anger directed or misdirected is taken out on the Rustler, friends, or family.
Nick: You know, you (start rustling subject)...
Kenji: God dammt! (Response rant). Why you gotta start shit like that?
Nick: Calm bro, just try to rustle feathers!