I'm a time traveler.
Do you expect me to believe that you are an acetal time traveler?
I hope you do. I have time traveled for a while now.
You are not an actual time traveler. That is not possible. It is ok to pretend sometimes, but there comes a time and place where you need to drop the act.
But I'm serious. I can show you soon.
I do not believe you at all. These are the situations where you need to stop the pretending. People are going to be convinced that something is wrong with you if you keep it up.