Is the nearest you have ever been to a pussy? Well I don't mind horny girls looking at what you can't have.
Now keep stroking each others clits, I want you both horny. If one of you has a chastity cage now is time to have it on hand. And get some ice as we may need to ice one of you girls down to get you inside what I hope is an extra small cage.
Now I could be mean and make Sissy A lose her orgasm for having a smaller clit but that would suggest Sissy B deserved one, which isn't true as really your clit should also be locked up. But as you've both been so well behaved I will stick to my word and allow one of you to spill your mess.
Sissy B you may choose red or black. I will show you a card and if you are right you will get the orgasm, if you are wrong you will have a week of chastity and Sissy A will get an orgasm. However as Sissy A is smaller if loses, she will face two weeks without making a mess.
So what will it be red or black?