I think I want to leave this one as is, since it's actually possible for Mongoid to add a special `humans` inflection for this particular case.

Would you mind submit a PR to Mongoid to add something like this? https://github.com/bogdan/rails/blob/b649de26a268c4a9a253381a431cf6fd177d4ed6/activesupport/lib/active_support/inflections.rb