Not a Christmas Song -- Baby It's Cold Outside - Multiple
First, and most importantly: this is not a "date rape" song. This is a "talk me into it" song, common in the 1950s. The lady wants an excuse to give when confronted later why she didn't come home, but she wants to stay. This is clear when you reverse the parts:
While I think the song is cute, and any "talk me into it" song is quaint in this era of "let me talk all about it", this has absolutely nothing to do with Christmas.