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It's pretty close to "Haven't I believed enough in your bullshit? Haven't I suffered enough? Isn't that enough itself? I'm not evil! I'm not!" with some wiggle room given for various dialectics, or "Why does this bullshit keep happening to me?" However I more inclined to think the former, and he's cursing specifically at Wednesday.

That's fascinating. Then, Leprechauns are not as much Celtic folk characters than Viking/Nordic lost souls gone rogue on irish land! :) That fits perfectly