Is this the correct translation of what Tomoko is saying?
The Japanese is:


  ニ学期ずっとこの席だと？ストレスで胃が蜂の巣になる！


More or less literally,


  I have to sit here for all of second term? The stress will turn my stomach into a beehive [i.e. thing with many holes]!


The subtitles you have there are from [Commie]; their subtitles for Watamote were edited by one of their more, um, liberal editors.