My favourite Christmas song.

"...happy Christmas your arse I pray God it's our last".

From Wikipedia:
On December 17, 1987, the Pogues and MacColl performed the song on the BBC's popular television show Top of the Pops, and it was propelled to #2 on the official UK Top 75. For the Top of the Pops appearance, the BBC insisted that MacColl's singing of "arse" be replaced with the less offensive "ass", although as she mimed the word MacColl slapped the relevant part of her body to make it clear what was meant.

On December 18, 2007, BBC Radio 1 put a ban on the words "faggot" and "slut" from "Fairytale of New York" to "avoid offence". The words, sung as Kirsty MacColl and MacGowan trade insults, were dubbed out. MacColl's mother, Jean, called the ban "too ridiculous", while the Pogues said they found it "amusing". The BBC said: "We are playing an edited version because some members of the audience might find it offensive". Later that evening Radio 1 backed down and said that after a day of criticism from listeners, the band, and MacColl's mother, they reversed the decision.

In his Christmas podcast, musical comedian Mitch Benn commented that "faggot" was Irish and Liverpudlian slang for a lazy person, and was unrelated to the derogatory term for homosexuals