A ramuscel is someone who thinks his short ramus contributes to his inceldom.
Ramus is the vertical part of the mandible located under the ear. This bone is sexually dimorphic, meaning the longer it is, the more manly the face.
There have been secular tends for the jaw to become shorter and faces more narrow/longer in recent history. This may impair the facial aesthetics of many males, but also females.
Well-known incel categories