Well none of them strike me as carols that could be sung by a fire, you know.

I think it sort of depends on who is singing the song. I have a version of Baby It's Cold Outside and it is rather sweet. Other versions are not so. The song was written in the 50's so it may explain some of its flavor.

I have always loved Eartha Kitt's version of Santa Baby, growls and all. I have laughed that no Santa in the world would be able to ignore the sultry Kitt's Christmas list.