If you have been a good slut and locked yourself in the chastity long enough, you should be horny enough to achieve sissgasm for me. I will see if you trained your ass well enough for me to fuck. And don't even think about humping my legs you horny slut.
Also, if you fail your sissgasm, that means you're not horny enough for me or locked yourself long enough, so I won't let you cum until I think you deserve to be relief.