In the Cassell Dictionary of Slang (1998), Jeff Grant defines a Hooray Henry as a "rich young man given to much public exhibitionism, drunkenness and similar antisocial activities, all based on an excess of snobbish self-esteem."
ɪnðə kˈæsɛl dˈɪkʃənˌɛɹi ʌv slˈæŋ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti ˈeɪt, dʒˈɛf ɡɹˈænt dᵻfˈaɪnz ɐ hˈoːɹeɪ hˈɛnɹi æz ˈeɪ "ɹˈɪtʃ jˈʌŋ mˈæn ɡˈɪvən tə mˈʌtʃ pˈʌblɪk ɛksɪbˈɪʃənˌɪzəm, dɹˈʌŋkənnəs ænd sˈɪmɪlɚɹ ˌæntɪsˈoʊʃəl æktˈɪvᵻɾiz, ˈɔːl bˈeɪst ˌɔn ɐn ɛksˈɛs ʌv snˈɑːbɪʃ sˈɛlfɛstˈiːm."