why do YOU laugh?

My question is simple, "Why do YOU laugh?" I know why I laugh. I laugh when things are funny. I laugh when people are stressing out over something that isn't too big in the grand scheme of things...spilled milk, oversleeping, not enough/too much work. I laugh when I get nervous and when I'm scared--it's my natural defense mechanism, I just can't keep it in. I also laugh sometimes when I'm by myself, because I think about how silly I look at that moment.

So, why DO you laugh? Do you laugh at the wrong time? Do you laugh at inappropriate moments (during weekly staff meeting?), or do you never laugh?

I want to be remembered as a laugher.