The tag implication #68868 sexsomnia -> sleeping is pending approval.
Reason: Sexsomnia, as described by the wiki page, is when a sleeping person has some some abnormal behavior during sleep that is sexual in nature (i.e. sleep masturbation or sleep moaning). Because it involves a sleeping person, I believe the tag should imply sleeping. Currently it has no implications whatsoever.
Even when searching sexsomnia -sleeping, you get a couple posts, all of which include a sleeping person.
However, I don't believe it should imply sleep_sex, because sleep_sex is explicitly "sex where at least one participant is asleep", whereas sexsomnia is just someone exhibiting a sexual behavior while asleep.