I'm not judging, but you expressed the need and want to be sarcastic a few times. How come you want to be sarcastic with people? I'm just curious. I am really quiet too, when people then point out how quiet I am it makes me more uncomfortable and I'll talk even less. People don't understand that, it really puts you on the spot.

I just try to find things to ask about, stuff they have mentioned or have an interest in. To show an interest, hopefully they will show an interest back. Some people don't.