a) is when teachers wander through city/town/village/country and smile at people who have to work;
b) is made for teachers so they forget the painful parts and can continue to teach in September for 10 more months;
c) allows teachers to catch up on doctor appointments, hair appointments, lunch dates, dinner dates, movies, reading books, taking walks, any random activity that wasn't absolutely necessary between September and June;
d) gives teachers who are also parents time to spend with their own children, and then they realize they are really happy (or not) working during the school year;
d) lets teachers remember what they love about teaching.