So a lady comes in and hands my shift the Venti CM she had previously bought. I don't know what the complaint is, but I remake it anyway. I scoop on the luscious foam, and am about to top it with caramel when the lady asks, "So you don't actually put caramel inside, you just put it on top?"
Then I explain to her exactly what goes inside a CM. "Here, give it to me," and she takes the drink before I'm done, scooping the luscious foam off and dumping it into the trash. She sips daintily, scoops out more foam, sips some more, and says it's not sweet enough. Do we stir vanilla in? No, I say, but I stir it for her. She shakes her head...still not sweet enough.
I put 3 more pumps of vanilla inside, and she tries it, nodding and saying that yes she can taste it now, but it could still be sweeter. I put in another 3 pumps of vanilla. She tries it and is now satisfied, saying that this is how the Starbucks in her area makes it, and my shift is backing me up and telling her that the other place has been doing it wrong.
So finally she asks how to ask for the drink so it's made the way she wants, and I tell her in my most deadpan fashion, "Easy, just ask for a Venti Caramel Macchiato with 10 pumps of Vanilla". This has the desired effect, and she fairly blushes with embarrassment. I am vindicated for the evening.