Or how about the converse - an old mind in a young body. Could be grounds for qualifying for early retirement benefits at 30 something!
Oops, gotta go... My University of Michigan Law School application is due. I think I'm going to be Zimbabwean today.
And then there are people such as the computer repairman Stalking Cat (Cat for short) and the sideshow celebrity the Lizzardman. The mind of a lizzard in a human body?