As you probably guessed, you are going to be spanked. First sit down. Feel the fleshy bit where your weight rests? Then is going to be your target. Now put the panties back in your mouth an bend over. Spank yourself right on that spot. Each hit should have a nice ‘snap’ to it. Keep going until the fleshy part you sit down on feels hot and has a nice pink glow to it. Check yourself in the mirror. When your ass is looking thoroughly punished take a picture to submit with your report later.
This may feel like it is a bit harsh for a first punishment, but think of it as an investment for the future. Better learn to listen and obey when it is merely your ass on the line, as opposed your exposure as a sissy.