I don't think this one has been done before. I'm intrigued to see what happens!
You wake up one morning, and you and your sig. other discover that THEY have spontaneously changed to a body of the opposite sex. Primary and secondary sex characteristics (facial hair, breasts, genitals, etc) aside, their appearance is similar to yesterday, and it seems to be permanent.
What happens then?
Bonus: What happens in three months when they change back to their birth sex, similarly spontaneously and otherwise-untouched?
You wake up one morning, and you and your sig. other discover that THEY have spontaneously changed to a body of the opposite sex. Primary and secondary sex characteristics (facial hair, breasts, genitals, etc) aside, their appearance is similar to yesterday, and it seems to be permanent.
What happens then?
Bonus: What happens in three months when they change back to their birth sex, similarly spontaneously and otherwise-untouched?