Kirk/McCoy:
Just One of Those Days by
suddenlyswept (Kirk/McCoy, NC-17, 2,655 words)
Summary: Bones had a day from hell. Jim has a plan to help.
Notes: Bones is tied to a headboard while Jim worships his ass with vibrator/dildo/cock/tongue/fingers. Do you need any more of a summary?
Other:
Summer In Your Heart by
rubynye (Gaila/Kirk/girl!McCoy, NC-17, ~2,200 words)
Summary: Jim kissed her and Gaila kissed her and now here she is.
Notes: This is the kind of lush, ecstatic threesome that only this author can write. It's gorgeous to watch Lenore McCoy being pleasured out of her mind.
Easy by
the_deep_magic (Kirk/Spock/Uhura, NC-17, ~3,000 words)
Summary: For the prompt: Kirk/Spock & Kirk/Spock/Uhura Uhura fantasizes about her boyfriend and her captain getting it on. Spock and Kirk turn out to be totally okay with putting on a show for her. Voyeurism to start, and then she joins them when it's just too hot for her to resist. Lots of sexy description, particularly of the guy-on-guy part(s), pretty please!
Notes: I think my brain shorted out as I read this. I've never wanted to be Uhura more.