bubble guts vs lask

bubble guts

noun
  • A condition where one experiences discomfort, bloating, and cramping in the stomach or digestive tract due to gases caused by extreme hunger or explosive pre-diarrhoea. 

lask

noun
  • Originally of both persons and animals, now only of animals: looseness of the bowels; diarrhoea; (countable) a bout of this ailment. 

How often have the words bubble guts and lask occurred in a corpus of books? (source: Google Ngram Viewer )