Is an acronym for "Fresh Off the Boat", and refers to new immigrants to a country (mostly Western). A phrase first coined in New Zealand in the early 90's by Polynesians to differentiate new arrivals (immigrants) from the old country (Tonga, Samoa, etc) from those with a Western upbringing. Now commonly used to describe any person new to a country, who is not well versed with its language or culture (mainly Western). Can be taken as an insult, or a term of endearment (eg; pride of culture).
"That Sione is such a F.O.B. He doesnt speak good English, & last week he walked through the drive-thru at Macca's (Mac Donalds) ..."