The strangest dreams that I have are going back in time, like 20 years, and not being the person that I was then, but the person that I am now.
They're only strange because I would be an older adult mixed in with 17-20 year old-somethings.
I often dream of the past, being able to change it or have a better outcome than what happened, but based on who I am now. It just feels weird, and unrealistic to look back on as a dream.