I don't really know why.
I like the song and it makes me giggle at the same time.
I think it sounds sort of hauntingly Wuthering Heights-ish, but it makes me giggle at the same time.
The part at the end where she is waving her arm around makes me outright laugh.
I also like to routinely imitate the part where she squats down with her arms outstretched toward the camera and then abruptly pops up and circles both arms above her head while gyrating her hips. It's how I amuse myself.
Who can find the Napolean Dynamite move? Hint: It's around 1:37.