Was ist das finnische Äquivalent von „yo“, wenn man jemanden anspricht?

Hei!

„Vittu“

Give it a shot

you slap the person youre adressing (dw its friendly)

Tuota noin niin

There is none, sometimes one can ironically say „jou“ to someone they know. The way to greet normally translates to „hi“ most of the time.