I've signed every document the last 3 years I signed as mickey mouse not my real name
Why wouldn't you use your real name to sign stuff?
I don't know, I sometimes sign my papers with other names.
Whenever you have to sign a document usually, it has some kind of importance. Therefore, you should not risk signing them as Mickey Mouse if you think it's humorous. There are going to be future problems that will take a ton of effort to resolve.
I think it's funny.
Well what you are doing could get you into a lot of trouble. You really should use your real name on documents for now on.