jack knife barber
A person who performs illegal abortions. This term is used in the Jethro Tull song "Cross-Eyed Mary," which is about a very young prostitute.
"She dines in Hampstead village on expense accounted gruel,
And the jack knife barber drops her off at school."
"She dines in Hampstead village on expense accounted gruel,
And the jack knife barber drops her off at school."
Mary had an unexpected surprise, so she paid a visit to the jack knife barber.