Is anyone here a neurologist?

I was writing something, when my mind went onto something funny. You know when you laugh, it's hard to write at the same time because your nerves get all tingly. However, when I was still laughing, I found that only my right hand was affected by the tingly sensation because when I wrote with my other hand, there was no tingly sensation, and it did not feel weak. I thought maybe it was because the left side of the brain is controlling my right hand and my right brain is controlling my left hand. If that's so, then does the left side of my brain (or everyone else's) have to do with this laughter? I thought the right brain had more to do with emotions, but maybe it differs from person to person.