The tag implication #64426 menacing_silhouette -> silhouette is pending approval.

Reason: A menacing silhouette is a silhouette.

This kinda makes sense, but very few of the posts in that tag are actual silhouettes. Like maybe 5 or 6 of them, so a terrible mistagging rate. Having a tag for this makes perfect sense to me, though. It's sort of a common and distinctive cartoon/anime trope, so it makes sense to tag it.