A very common thing Persian guys say.
Basically the same as 'damn!' or 'whoa dude!'.
Often used when they see a hot girl or they are impressed with something
Ali ghormehsabzi: "Oof baba, look at that f*king vhite girl, so sexy."
Arian white-bmw kabob: "baba I know, let's ask her if she wants to come in my BMW.
Persian dude 1: "Yo I'm so hungry dude..."
Persian dude 2: "Buddy Arian just ordered a pizza"
Persian dude 1: "OOF BABA! Joonam"