Green’s Dictionary of Slang

Christmas n.

1. (US und.) a railroad brakeman.

[US]‘The Lang. of Crooks’ in Wash. Post 20 June 4/1: [paraphrasing J. Sullivan] The brakeman [...] is termed a bakery, a Christmas, a shad or a shack.

2. (N.Z.) non-specific description of anything pleasant.

[NZ]I. Hamilton Till Human Voices Wake Us 103: I thought the cells were Christmas, after Wenukai with its six by eight hovels.

SE in slang uses

In compounds

Christmas compliments (n.) [the effects of winter weather. Grose (1796) includes the synon. Christian compliments but it is a misprint, as can be seen by his cross-ref. to ‘Christmas’ at ‘compliment’]

a cough, chilblained heels and a snotty nose.

[UK]Grose Classical Dict. of the Vulgar Tongue ms. additions n.p.: Christmas compliments to you that is, a Cough, Kibed Heels, & a Snotty Nose.
[UK]Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.:
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
Christmas hold (n.) (also Christmas grip, Father Christmas hold) [pun on SE ‘handful of nuts’, a popular Yuletide pleasure and nuts n.2 (1)’]

(Aus./N.Z.) a squeeze of one’s opponent’s testicles, usu. in wrestling.

[Aus]Baker Aus. Speaks.
[Aus]T. Ronan Packhorse and Pearling Boat 125: Joe came in low, looking for that grip which the west coast black fellow learned from that other clean fighter, the Jap: The Christmas hold (the handful of nuts).
[Aus] Australian 2 May Mag. 7: A woman in a dental surgery, lying on the dentist’s couch, put the Christmas grip on the dentist. When the dentist winced with pain, as any-one would wince if a Christmas grip were put upon him, she said, ‘We are not going to hurt each other are we, Mr Dentist?’ [GAW4].
[Aus]Sydney Morning Herald 20 Mar. 1: Daley pointed to a prostrate Lyons with icebags on his groin and said: ‘They got him with a Christmas hold’ [GAW4].
[Aus]Macquarie Dict. 🌐 Christmas hold noun Wrestling, etc. a hold in which one grabs the opponent’s testicles (a Christmas hold is ‘a handful of nuts’, i.e. nuts testicles).
[NZ]McGill Reed Dict. of N.Z. Sl. 76: Father Christmas hold, the old hand under the crotch of an opponent, inducing surrender.
[Aus]Sydney Morning Herald 17 Sept. 🌐 The NRL boast the game is clean of [...] testicle grabs and the incidence is certainly less than in the AFL where [...] the Christmas hold is called the squirrel grip.
[Aus]A. Lawrence Olympus & Beyond 27: Early in the game, when both teams packed down in a scrum, one of the Bondi United second row forwards grabbed Ritchards in a Christmas hold (a.k.a. a handful of nuts).
[Aus]N. Cummins Adventures of the Honey Badger [ebook] VITAL AUSSIE VERNACULAR Squeezed Testicles 1. Tackle grab 2. Christmas grip.
Christmas pudding (n.)

(N.Z. prison) a skinhead who has suffered a beating.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 42/2: Christmas pudding n. a beaten-up skinhead.

In phrases

Christmas on a stick (n.)

(Aus.) an admirable individual.

[US]Hartford Courant (CT) sect. D 5 Sept. 27/3: G’Day from Down Under [...] He’s a fair dinkum sort, a little Christmas on a stick [...] most people would crack a tinnie with him.
what else did you get for Christmas?

(Aus.) ironic retort to someone who is showing off, esp., a thing they are unjustifiably proud of; often used against people driving flashy cars.

[Aus]Aus. Women’s Wkly 14 Nov. 29/1: He had to draw up behind. I got out of the van as elegantly as was possible in my short tight skirt and marched over to him. ‘And what else did you get for Christmas?’ I inquired coldly.
what is this, Christmas?

a general phr. of pleasurable surprise.

[US]P. Munro Sl. U. 203: When my boyfriend called tonight, I said, ‘What is this, Christmas?’ to my roommate.