Pois é is more used when you say " oh right ! " but you can say in another context but most of the times is like this.

What's Cafuné mean?

“The act of caressing or tenderly running fingers through a loved one's hair” is a mouthful mercifully avoided in Brazil with the term cafuné. This affectionate action can be applied to lovers and pets alike, as can the term chamego, which wraps up the senses of intimacy, infatuation, and cuddling, all in one term.

What does VIXI mean in Portuguese?

expresses surprise or admiration.