Umm, have I got this right? The guy was a metaphor for the ugly duckling. He's all fucked up, because he had a bad childhood. He beat up the guy to stop the baby from being as fucked up as him. Then put the baby in the toilet and sat down, like a bird would do on a nest to protect its young.
Was that right? There might be something I'm totally missing.
Nice easter egg by the way.