Bodyswap
From Super-wiki
Definition
Bodyswap means any story in which the characters swap bodies with someone else, e.g. Dean finds himself in Sam's body and the other way around.
Origins and Examples for Bodyswap Fic
The first bit of bodyswap in Supernatural fanfiction seems to be [an untitled snipplet] by slytherinblack.livejournal.com slytherinblack - Wincest - 2006-02-20.
On 2006-03-01 [monkiedude] posted her Wincest story [Turn it Over And].
Other Examples