that bitch at starbucks

If that's true, then wouldn't harping on those topics simply exacerbate the problem? I mean, I'm not saying she'll ever see or hear his comments, but in general, I think it's the kind of comments that unattractive people receive, rather than simply being unattractive, that have the potential to give them a bad attitude.

Not really, as in reality, people are not likely to just say to some random stranger "Goddamn, you're fat!", it's just not the done thing. I'd say 99% of their attitude is created themselves, based on their own assumptions of people's opinions towards them, and that just creates an ongoing cycle: They treat people like shit, to make themselves feel better, and because they're being nasty to someone, well, that person serving them is not gonna be nice back, but the person thinks that the other is judging them by their size or looks, when in reality, they're being judged by their attitude and behaviour.
As someone who spent the last 13 years (until I spoke to Debra Jean) hating the sight of myself, I understand that mindset rather well.
Spike

Oh, Spike, I fully agree with you... it was just more fun to make them upset because I wasn't getting upset.

And bad bad bad! for not catching the "Breakfast Club" reference.

I'm sowwy, but... I... *hangs head in shame* haven't seen it yet...
Spike

You're cute, so I'll forgive you, but you really must rent it at some point.

Okay... back to whining about stupid customers.

God, what an assface. If I would have been the Barista things would have gone a little bit differently:

Lady: What the hell did you put in this coffee?
Me: Arsenic.
Lady: ...
Me: ...
Lady: What did you say?
Me: Um, cinnamon! Yes, cinnamon, that's what I said.
Lady: What the wrong with you? Are you an idiot? I didn't want any cinnamon, and for that matter, I didn't want any sugar!
Me: Oh that's not what you said last night!
Lady: ...
Me: ...
Lady: That's precisely why you'll be stuck in a shitty job like this for the rest of your life!!!
Me: Oh really? See I thought I was going to be stuck in my stripping job for the rest of my life. Let me tell you: it ain't easy being erotic.
Lady: ...
Me: ...Meh...I quit. *Whips off barista gown and dances on counter*

People like that make my day. I find it hilarious that there are actually people out there that are that illogical and terrible. It makes me remember just how important the good ones are.