Full Idea
There is a possibility of 'higher-order vagueness'. The vague may be vague, or vaguely vague, and so on. If J has few hairs on his head than H, then he may be a borderline case of a borderline case.
Gist of Idea
A thing might be vaguely vague, giving us higher-order vagueness
Source
Kit Fine (Vagueness, Truth and Logic [1975], 5)
Book Reference
'Vagueness: a Reader', ed/tr. Keefe,R /Smith,P [MIT 1999], p.140
A Reaction
Such slim grey areas can also be characterised as those where you think he is definitely bald, but I am not so sure.