It's Saturday! Time for a Dear Daniel letter
It's time for you to allow mommy some private all alone bathroom time. I understand that you like to follow me around to make sure your not missing anything exciting...or eatable. But the bathroom is/has been/and will remain off limits to you until your potty trained...or it's bath time.
Please stop trying to open the door. Please also stop banging on said door when you can't find a way to open it. Most important please stop making a scene until mommy is forced to peak out the bathroom to check that everything is OK.
I hope you will soon understand this is about mommy needing someplace where she is not being "mommy".
Love you always,