Harmony: Okay, I'm trying to be supportive here, so don't drive a stake through my heart like last time. But you can't kill Buffy. She's the Slayer. She is so gonna kick your ass.
Spike: Got two barrels here that'll prove you wrong.
Harmony: I knew you'd take this personally. You're so sensitive! How are you gonna kill her? Think! The second you even point that thing at her, you're gonna be all "Aaagh!" And then you'll get bitch-slapped up and down Main Street, unless she's had enough and just stakes you.
Spike: Sure, it'll hurt like hell for about two hours. But she'll be dead just a little longer than that.