apothecary's Latin
obsolete Latin that has been badly mangled or jumbled, either unintentionally through bad translation or intentionally for the sake of humor. Also known as Law Latin, Dog Latin, or Bog Latin. He only spent a year learning Latin, so now he just mutters apothecary's Latin to sound more learned than he is.
talk like an apothecary
obsolete To chatter on in a foolishly pedantic manner. The playwright wants to assume his work speaks to the most educated of society, but in truth, each character talks like an apothecary, and their dialogue so fumbling and convoluted as to be laughable.