This is the day you leave high school with a diploma, and many gaping wounds and/or emotional pain/catharsis.
Wow, Tom! Congratulations on graduating from high school, isn't that a big relief?
Tom: Well, this wound from AP Chemistry will never go away, and I feel like crying like a little girl, knowing I don't have to put up with those fucking losers and that history teacher for the rest of my life *cries*
Then comes college, when you become a freshman all over again, CONGRATS!