Shanghi Phonebooth Share definition Flag A Shanghi Phonebooth is a popular orgy among party goers, involving a large amount of people in a small area, having sex simultaniusly. Dude 1: "This party is gay" Dude 2: "Shanghi Phonebooth?" *Awkward silence* Dude 1: "Suit up" Shanghi Phonebooth by Mr.Manhatten November 6, 2010 Get the Shanghi Phonebooth mug.