*Spoiler's* line...

of "You LIVED! in MY HOUSE!!!" is like the perfect last words for Rick Prime.

He never outwardly pleads for his life.

He never gives C-137 the satisfaction of begging or bargaining, or panicking.

He never stops being who he is: a smug, sociopathic, narcissistic douchebag.

With his literal last words, he denies C-137 any form of closure or victory.

God what a great episode.