A mildly derogatory term for people or families in Pakistan (or India), or in Pakistani (Indian) communities abroad that are "culturally-challenged" in they barely get by in a local language and speak only English fluently and are a bit oblivious to native customs and norms surrounding food, music, clothing, celebrations etc.
ex. 1: I was going get a reservation at an Indian restaurant but wasn't sure if you burgers would've been up for it.
ex. 2: She was citing one of the local authors and his eyes glazed over - he's a total burger.
ex. 3: The Khans can be amusing company, but they're a bit of a burger-family if you ask me.