create alias narrow_waist -> slender_waist
Both are used for the same tagging purpose
EDIT: This tag alias is pending automatic rejection in 5 days.
EDIT: This tag alias has been rejected because it was not approved within 60 days.
EDIT: The tag alias narrow_waist -> slender_waist (forum #151439) has been rejected by @DanbooruBot.
Updated by DanbooruBot