Mental redshift

I was in the supermarket earlier, and they are, of course, playing Christmas music. At one point "Jingle Bells" came on. I was only half-listening, and my mind isn't really on that holiday, so what I heard probably isn't what the author intended... but I thought some might find it amusing:

"What fun it is to laugh and sing a slaying song tonight!"

Gee, I hadn't realized Buffy was such a big part of Christmas...