It's common knowledge among us cynics and scrooges that the lyrics of "Baby It's Cold Outside" are just a taaad bit date-rapey. If you didn't know that, you must not be on our two-sizes-too-small listserve. Good for you. Keep the hope alive. (It was still really cute when Blaine and Kurt sang it, though. I may be a scrooge, but I'm not soulless.)

But, speaking of staying alive: Did you ever think about how crazy-scary the lyrics of "Santa Clause is Coming to Town" are? No? Well, last night Dexter star Michael C. Hall stopped by Jimmy Fallon and really didn't have to work very hard at all to turn the Christmas classic into a serial killer's anthem. WATCH (plus two more clips from next Sunday's Dexter finale!):

"Santa Clause ... will KILL YOU IF YOU'RE BAD!" This guy knows what he's talking about:

Not quite in the Christmassacre spirit just yet? Allow these new Dexter clips from next Sunday's finale, "The Big One," to do the trick. While other shows are doing their holiday episodes, Dexter is doing what Dexter does best: Mixing family cheer with premeditated murder:

Check out another sneak peek from next week's "The Big One" and take our polls on who might die!

(Image: NBC)