What is this "fun" you speak of?

I've forgotten how to have fun, I'm completely pathetic. The only reason I bring this up is that I'm a second year university student and I don't do anything, actually that is a lie I do homework, but then after that it's back to nothing.
Shouldn't I be having more fun than my body can handle?
This is the time in my life where I'm supposed to have the most fun I can without suffering any consequences .
I turned 19 in June and have yet to go to one of my town's local bars; pathetic.
This past weekend I went on a picnic; pathetic.
The highlight of my weekend was that I bought a plaid dress; again pathetic.
I did physics homework, on a Friday; beyond the measurable amount of pathetic.
I think back to high school, and I remember the times I had with friends being labelled "fun".
But in actuality I don't think I had that much fun in the first place. I don't even talk to half of the people I went to high school with, let alone spend time with any of them. Really how much fun is watching people you don't even like get drunk and throw up on themselves?
I think I should rephrase my first statement, I don't think I've ever had fun.
It's been settled, I have no clue what fun is.
I need to know what fun feels like.
Fun, fun, fun.
Even the word has lost all meaning to me.
Perhaps I'm just destined to be keep the scale or boring and fun level. Maybe I'm an important factor in keeping everything the way it is.
The people that have fun on a regular basis depend on me to keep them from slipping into the abyss of pathetic. Me and the rest of my boring people keep order in the world, without us there would be chaos, actually there wouldn't be any chaos and that would be what the problem was.
So in fact my lack of fun was predestined for me, and I must maintain it or else the rest are doomed.
I must finally come to understand the fact that I will never have fun, ever.
Oh well, I'm over it. I think there's some physics homework to be done around here somewhere...