You've been a whole month in chastity, unable to stroke and cum... But I want to tease you a bit more before I let you unlock that cage. I want to see JUST how devoted you are to my dirty feet. I want to see if you can cum while worshipping my dirty feet, and eating some foot dust from my heels.
When you've shown how devoted you are, I let you take off the cage and jerk off for 2 whole min! Better cum in that time, footslave.