Did you go to the bathroom on his desk, or your desk in your pants or on his face?
If you were doing your job there would be no reason for your employer to threaten to fire you.
You can file a civil lawsuit against your employer if the employer keeps threatening to fire you for harassment, and the burden of proof will be upon him to prove otherwise.
Have the employer write a letter stating that they only hire women so that they can fire them. Then have the employer get it notarized.
Absolutely not it has nothing to do with the employer
Yes, in fact, the employer is specifically asked for such information.
Going to the bathroom is a necessary body function. In that respect, going to the bathroom is healthy. It can become unhealthy if you do not use healthy practices, like washing your hands after eliminating.
They need a good reason to fire you.
To say 'He is going to the bathroom' you would say 'Va al baño.'
yes they can and will probably fire you.
YES
Absent a contract between you and your employer or local law/company policy stating otherwise, an employer may fire you for any or no reason with or without notice.
It is a human right to be able to relieve oneself at the restroom. It is violating worker’s rights by not giving the workers the ability to go to the bathroom. The employer is at risk of a lawsuit if they do this.