Callousness is amusing, and I have to admit I've grown a bit soft. The difference in tone from when I'm being a dick for entertainment to when I'm just being a dick is subtle, but overwhelming.
EDIT: I'd insert a [cue Grefter joke about me being a manwhore for fun] sticker here, but I'd have better luck panhandling with a "Will refrain from taking off my clothes for a penny" sign.