My mistress told me that I must ask you all for suggestions for punishments and promises to carry out all of them no matter how severe and then i will have to describe how it felt.
It can be anything from enemas to bladder washouts to feminization to beatings
Regardless of your S&M scene, when it comes to "punishments", I would stay away from anything that could cause a UTI or damage to the urinary system or permanent physical harm.
MedFet is different, at least to me because it is generally more aseptically done than the same thing done as a punishment when it is possible for either party to get a little carried away and careless.
So, now for the punishments, and are you sure you want to know these??:
A good whipping, flogging, spanking, restraints, orgasm denial, stuffing with frozen, glycerine coated very ripe bananas with no opportunity to expel, taking 4 ounces of castor oil and being restrained spread eagle or hands tied to the ceiling so you can't move and toilet denial after taking the castor oil, large dildo insertion, pulling out the pubic hair, strong electro stimulation, with narrow electrodes so it is a real shock, rather than a pleasant stim, wharton pinwheel rolling over your body, with or without electro, making a "zipper" with clothespins on a string up and down the length of your body, to include your penis and scrotum, suspension, suspension with glycerin enema and not allowing you to expel, (you wouldn't want to expel anyway, it would all run down your head and face), hot wax, spanking with the electric fly swatter, being given a soap and glycerin enema or epsom salts enema and being forced to walk around the block for an hour or until you soiled yourself outside and it ran down your leg, do a scene where you give consent for your NON-CONSENSUALITY (this has the potential for being most severe because you DO NOT give consent for what happens to you and there is no safeword), public humiliation of any kind, mummification for an extended time (warning, your physical signs must be monitored), kidnapping, rape by an unknown (to you) person, etc.
I could think of more given time, but are you sure this is what you wanted to know ? ? ? ?
Will you be getting on over your head?
Do you have any real BDSM experience?
Be careful what you wish for.