A reference to indicate that something is out-of-date or old-fashioned. TwenCen is an abbreviated way of saying Twentieth Century.
Your landline is so TwenCen!
by MrMxyzptlk June 03, 2009
ridiculously, delusionally, hopelessly, laughably old-school, out-of-touch, short-sighted, stupid, or otherwise painfully and obviously ignorant of the realities of life in the 21st century. from 'twentieth century.'
hundreds of 12-year olds are getting rich on ebay every week and my parents are locked into this hideously twen-cen vision of a daughter with a college degree, a suit, and a 9 to 5.
by phototropik September 24, 2006