One-Shot: All Good Fun Until... (Supernatural)

Title: All Good Fun Until…
Pairing: Sam/Ruby
Rating: PG-13
Any warnings: implied sex, implied bloodplay, but nothing shown
Words: ~750
Disclaimer: Don't own Supernatural or any related character.
Summary: There are many precautions to take when doing a little light bondage... particularly if anything requires a key.
Author's Note: This was written, oh, coming up on a year ago for SPN Spring Fling for polleekin. I, uh, am just getting around to cross-posting it. Enjoy!

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( Story Under Cut )