green_postit requested a knee-walking challenge.
This can be knee-walking of any kind. A knightly virtue of humility, maybe? Making Merlin 'walk on his knees; either in regards to porn or otherwise. Maybe someone really doesn't like slaves. Take this challenge any way you wish but either way, this should make for an interesting challenge!
You have until Sunday 29th March 22.00 GMT before everyone stands up.