rock the boat vs sicken

rock the boat

verb
  • To disturb the status quo or go against rules or conventions, as in an effort to get attention. 

  • I'd just jump in and fix it, but that's not my job, and I don't want to rock the boat. 

sicken

verb
  • To fill with disgust or abhorrence. 

  • To become ill. 

  • To lower the standing of. 

  • To make ill. 

  • To be filled with disgust or abhorrence. 

  • To become disgusting or tedious. 

  • To become weak; to decay; to languish. 

How often have the words rock the boat and sicken occurred in a corpus of books? (source: Google Ngram Viewer )