“Paki” is an offensive slur used by people that aren’t south asian. It is often used to offend people from the south asian community, including Pakistanis, Indians and Bangladeshis.
People from these places are allowed to say the word. It basically means “curry muncher” and just a way to assault brown people.
It’s pronounced “pah-kee” and is sometimes used by Indians, Pakistanis and Bangladeshis to call eachother for banter.
Abdul: OI PAKI!
Muhammad: ayyy what u saying , Abdul?