I was playing cards with a couple of chums in a coffee shop tonight. On the stereo they were playing an Elvis compilation. At some point this song came on.
And when you hear the lyrics, wow. Dating two sisters is a remarkably bad idea. It's not at the same time, but still. And playing them against each other isn't good for anyone.
Overall I'd have to count this as one of his more fucked up and evil songs. Also one of the most rock n' roll things he ever did. The two coincide sometimes.