Yes to all of the above.

I have depersonalization disorder and I do those things since I was young such as looking at my hands and not feeling like they are mine or they look much smaller etc.

I also here the Peanuts talk "wah wah wah wah wah" or I just don't comprehend or know what they've just said.

I also when I think certain thoughts will bring much more stronger feelings of altered reality. What reality I have left it feels like. But to the point that my body will feel like it's being pulled to the floor by my mouth etc.

Many different things.

A really good site on this and dissociative disorders is

http://www.strangerinthemirror.com/

this was extremely to me in helping me understand my situation.