With the return of Band Aid here is the Canadian 1985 song which unaccountably makes me tear up a bit. https://www.youtube.com/watch?v=fsWGfQC3jMs
I have mentioned this before, and at the time I expect I mentioned this. Not a parody of anything at all, I'm sure. https://www.youtube.com/watch?v=enH2igVo55U
The film doesn't quite work IMO though normally it is the sort of thing crass enough for me to like.