R. R. inquires the origin of the above saying, but has forgotten the
context, viz. "and get your head shaved." I have often heard it explained
as an allusion to the fact, that, in former days, persons who showed
symptoms of insanity were sent to Bath to drink the medicinal waters; the
process of shaving the head being previously resorted to. The saying is
applied to those who either relate "crack-brained" stories, or propose
undertakings that raise a doubt as to their sanity.