Green’s Dictionary of Slang

Christmas! excl.

a euph. for Christ! excl.

1897		Kipling Captains Courageous 217: Christmas! I did n’t know it.
1899		E.W. Hornung Amateur Cracksman (1992) 33: Spit it out, or, by Christmas, I’ll drill you!
c.1900		‘Ramrod’ Family Connections 42: Christmas! weren’t their cocks stiff.
1905		A. Binstead Mop Fair 215: By Christmas! how it did throb, throb, throb!
1936		D. Footman Pig and Pepper (1990) 133: Christmas, look at that!
1943		M. Harrison Reported Safe Arrival 94: Chrissmas!
1954		Argus (Melbourne) 10 Dec. 25: [cartoon caption] Oh Crikey! Oh Christmas! Cripes!
1961		R. Gover One Hundred Dollar Misunderstanding 12: I thought: James Cartwright Holland, Holy Christmas!
1965		J.P. Carstairs Concrete Kimono 37: ‘Christmas, Gar’!’ she suddenly exclaimed ‘What the hell’s that?’.