[Big J]

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.

I got there in the end, used a modified version as I'm just under 6', and my rooms is fucking tiny.

Did make the ghost noise (goes without saying), but while doing so I tripped up, fell on my new desk fan which was on the floor, breaking that and possibly a rib as it kinda hurts to breath and laugh.

Good times.