Short for "bridge and tunnel", the term refers to those who travel into Manhattan from outlying areas such as
New Jersey and Long Island to take advantage of
the city's nightlife. The term
may also include those who come into Manhattan from New York City's other four boroughs.
The term is often used in a deragatory manner indicating that those who fall under this term are young and/or trashy and dilluting the quality of New York nightlife.