[Lorrie]

Grab hold of the top two corners of the duvet. Pull the duvet cover over your head. Raise arms until duvet corners match up with cover corners. lay that end on bed. remove yourself from cover. grab top two corners and shake until duvet is totally covered. close up bottom with snaps or buttons. Done. Takes 2 minutes.

This is a lot easier if you're over 6' tall.

And making ghost noises when you've got the cover over you is entirely optional, but highly recommended.