Answer in Italian in complete sentences "Cosa fai?"
"Dove vorresti andare?"
"Cosa dai?"
"Cosa vuoi dare?"
"Cosa vorresti dare?"
"Dove devi andare?"

Explanation:

Sto guardando un film.

Vorrei andare a fare una passeggiata

Do un libro.

Voglio dare una lettera.

vorrei dare un messaggio.

Devi andare a correre.

it can be both; depending on the situation at hand.

explanation:

let's just say i get in to a confrontation with someone, and they say "ur mom", it could be seen as an insult. or depending on the relationship or comfortability with the person it may be seen as a joke. the distinct line is how the chemistry behind the confrontation.