Several ideas come to mind.
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A Nightkin!>>>>>
Me: Hallo! Hallooo! I'm not dead yet! Just very badly hurt! Someone come help please?
*Sounds of something entering the cave*
Me: Oh, it's about time! Hey, you guys find the hooman that did this? Huh? Wait a minute...
*Night Stalkers attack!*
Me: Stupid karma system!
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The King!>>>>>
Me: Alright, listen up you guys! I've been lookin' around here an...we ain't got enough style in here.
Gang Member: Why not? What're we missing?
Me: Just a little pizazz is all. Come on now and I'll teach ya how to shimmy an' shake about! Hoobah!
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Victor!>>>>>
Me: Howdy, partner!
Courier: Dah! What the- How did- WHY ARE YOU FOLLOWING ME?!
Me: I don't rightly know what you're talkin' about. I'm on my way to New Vegas.
Courier: Yeah, I noticed. Same place I'm going. Why is that?
Me: Can't say for sure. Just an inclination to is all.
*Totally have my pincers crossed on that one*