Subs, what is something you don't think Doms understand?

[Butterfly]

I will be getting the opportunity to Domme a Dom very soon.

He has agreed to submit to me for 30 days, in the hopes that being a sub will make him be a better Dom. Hopefully he will end his 30 days having learned to be a better, more sympathetic, understanding and realistic Dom.

I want him to experience things that Doms hand out regularly, things that are hard for subs to do, that maybe Doms don't understand.

For example, I want him to experience:
*Stuffing panties in his ass
*Wearing a plug for an extended period of time
*Not being allowed to use lube for his plug
*Drinking his own pee
*Trying to cum from anal only

Please help me by giving me your list of things that you wish you Doms could experience. And if you can't think of anything, then feel free to provide ideas for revenge instead :P