The story was about the style of Italian women, at least some of the more flamboyant ones. The writer adopted that style and found it liberating and pretty thrilling to be mistaken as Italian.
I found interesting the responses of a few other online personalities to this quote:
It's Q's World says the phrase is "... an Italian expression for women carrying on in an over the top way (more referring to a Gaudy look, obvious makeup, extra jewelry buxom big hair , and I truly I do feel I'm living like that, well that and my Tits Out, big Heels, lots of gloss and eyebrows and legs out approach to life, with Fire in the Veins, is what the Italos call it, I need more eyeliner in my life to finish pulling the look But I'm almost there!"
Fuck Yeah, Tattoos!: shows the phrase wrapping in elegant cursive around a bare midriff.
Actor-singer Demi Lovato on CelebrityTweet: "So, blood is fire pulsing through our veins.. We're either writers or fools behind the reigns..."
Erin Ashley has posted a painting of hers on the theme: "The Italians have a name for their rapturous approach to life: Fuoco nelle vene."
One blogger admired the philosophy and its "rupturous approach to life."
I have a more subdued approach myself, not so rupturous as some of these. Even so, the fire-in-the-veins image and the very sound of the Italian phrase feels pleasingly intoxicating.