Laughing when it isn't funny..

So,,,
I've been in this some sort of situation that I have to bear with when I chat with PEOPLE (online).
Yes,, the part when the person LAUGHS at what you said when you weren't expecting that reaction. :|
Okay okay, If none of you get annoyed with this,
Then I guess I'm just too SENSITIVE??
Don't mind if I'm asking this,,
But is this NORMAL or just part of NATURE????
I guess, that's all since this is just a little complaint. 0.0
lol.

Laughing when it isn't funny... is that supposed to be funny????