Cheers!! Hooray!! Hail Hail!! A cheerful exclaimation of good intentions... in olde English, possibly during the Renasissance period, maybe during the Celtic pre-Christian European.
You'd hear the beer wench ringing the bell and yelling, "Hazaa to the giver!!" after receiving a tip of folding gratuatiy. And after a toast, or the winning of a game, or in honor of someone, you might hear a whole crowd shouting, "Hip Hip Hazaa, Hip Hip Hazaa, Hip Hip Hazaa!!" ... 3 times, in pace of Hip Hip Hooray