"...When I was young, I forgot how to laugh...; when I was older, I opened my eyes and beheld reality, at which I began to laugh, and since then I have not stopped laughing. I saw that the meaning of life was to secure a livelihood, and that its goal was to attain a high position; that love's rich dream was marriage with an heiress; that friendship's blessing was help in financial difficulties; that wisdom was what the majority assumed it to be; that enthusiasm consisted in making a speech; that it was courage to risk the loss of ten dollars; that kindness consisted in saying, "You are welcome," at the dinner table; that piety consisted in going to communion once a year. This I saw, and I laughed."
Like all of Kierkegaard's work, the actual meaning is open to interpretation. The way I see it is that there are all these silly social customs, and looking at them externally it is like a joke. I take the same view of life. I think it is amusing watching people and their "social manners" when you take a negative approach to yourself. Personally, I call it realistic, or "the truth". Yes I truly think I am ugly and so on, no I don't care. (Sorry for going off topic, I just didn't want you to worry about me being suicidal or something).