There are few things nicer than seeing a woman laying on her front on the bed wearing a very conventional nightgown or short nightie, , when it is slightly raised at the back to expose a tiny expanse of bare bottom.
If she has placed a hairbrush by her side then you can be fairly certain what she is thinking might happen.
If the punishment is a more planned affair then there might be additional instruments set out and probably a waiting period once the nightgown is removed.
An angry flatmate with a score to settle might make sure that you don't go to sleep until the issue is resolved.
Once the chastisement is finished it is time to forgive and forget and go to sleep with sweet dreams.