I love the line! HAHA! It's from Whine, Whine, Whine! Calvin says it to Superman in response to supermans comment "You know people who love each other are suppose to be kind to each other! Calvin was saying that Elis is just a waitress and wouldn't understand

Being grown-up isn't half as fun as growing up, these are the best days of our lives, the only thing that matters is just following your heart and eventually you'll finally get it right! ~Ataris