Abby and Ty go to see what jobs their parents go to. While Ty and his dad go the local sewage treatment plant, Abby looks at what her mom studies on her own topic of grossology. When suddenly, Abby throws up.
If there's one thing that is more dusgusting than seeing Abby throw up, herle, puke or perhaps (and she should have said it) vomit, it's seeing the vomit fly out of Abby's mouth. An close-up look at Abby's (or anyone else's) vomit, and the view rating would have to be adjusted.
This is one of the very few times, if not the first, where the main character gags. If it's one thing for me to classify this episode as a filter one, you haven't seen anything more grosser yet!