What can I say I needed a fix, and Master had gone flying for 4 hours. So I always keep a frozen key in a cup that at room temp will thaw in about 2hours and 50 minutes. Thank goodness master came home or I would have been in serious trouble (as always) If you doubt that I was locked up for three hours? Notice the position of the sunlight through the back door. I was in self bondage for about 3 hours!