A name used for a person that makes you feel all emotions, like the girl being sung about in the song "Skeleton Key" by Margot & The Nuclear So and So's is being refered to.
"That boy is nothing but a skeleton key. He's not so special after all. He just opens up the doors to old emotions."
by Stephanie M. L. February 08, 2008
To insert your finger in someone's asshole without using lubricant.
I need to take my girlfriend to the pharmacy to buy Advil because I skeleton keyed her... but first I need to wash my finger. While I'm there, I'd better buy lubricant for next time.
by Captain Map Reader May 16, 2010