From "The Walking Dead: Tell It to the Frogs (#1.3)"
[Rick is leaving the camp to save Merle
] Well look, I-Idon't, okay Rick, so could you just-could you throw me a bone here, man? Could you just tell me why: why would you risk your life for a douchebag like Merle Dixon?
Hey, choose your words more carefully.
Oh no, I did. Douchebag's what I meant.
Merle Dixon: guy wouldn't give you a glass of water if you were dyin' of thirst.
What he would or wouldn't do doesn't interest me: *I* can't let a man die of thirst, me: thirst, and exposure. We left him like an animal caught in a trap, that's no way for anything to die, let alone a human being.