Hooray Henry

noun plural Hooray Henries or -rys

a young upper-class man, often with affectedly hearty voice and mannersSometimes shortened to: Hooray

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012