Phrase used in Trinity College Dublin to describe a certain variety of upper-middle and upper class student who would perhaps be more at home in Cambridge or Oxford. Generally from established, anglican families that were members of the ruling elite before Ireland obtained its independance from the United Kingdom. Trinity College was originally founded as a protestant university in 1592 for the benefit of this elite, which explains their continued presence today, long after Trinity College has been overrun by catholics and other proles. (The name comes from the idea that West Brits would like to think of Ireland as just West Britain)