'Last Day': Late in the day I'm locked in my chastity cage. My wife checks the brass lock and all the rings to make sure the cage is secure and I can't get free. A half hour before being locked in I masturbate into a small plastic container and my wife puts it in the freezer. Most months I will eat the contents of the container shortly after being released from my cage...for one day. That one day is my 'free' day. It is the first day after 'Last Day'.
I can spend the 'free' day any way I like. Everything from cross dressing completely to simply masturbating at some point during the day. My 'free' day is mine alone. My wife does not participate in any part of the day except the very beginning where she watches me to make sure I eat the cum and lick the container completely. She hates the sight of my cock and only looks at it when she's checking it for security and when she unlocks it.
The rest of the month amounts pretty much to being locked up and me trying not to think about sex of any kind.