1 definition by thatfuckinperson
An island located off of Washington. The people there are often very wealthy and snobbish. Mercer Island is often confused with Bainbridge Island as people tend to say anyone from BI is a prick when in fact, they should be saying anyone from Mercer Island is a prick. While the people in Mercer Island are busy showing off their pimped out Mercedes, those of us in other areas of Washington glare at them.
by thatfuckinperson February 28, 2014