Yeah, he's pissed off; I'm certain of it. He did that deliberately to
let you know he's pissed off. Don't know how long your mother has been
staying with you, but apparently your cat sees her as an intruder, or at
least some sort of unwelcome presence in his home environment.

All I can suggest is that Mom and Cat need to find a way to warm up to
each other. Either that, or Cat needs to have a place in the home that's
all his own, where he can go and know Mom won't bother him.

I've seen this type of behavior before. Cats do this when they're mad at
you. I once had a cat that did that. The vet said he was angry because I
moved him to a new place, and there was nowhere in the home that was all
his. So I put him in an empty bedroom each night with food, water and
litter, and shut the door. By the end of the week he understood that was
his private little spot, and would just go in there of his own accord
from then on.

I don't understand. What is the problem? He should be allowed to do
whatever he wishes...

That was WRONG. You have NO RIGHT to force your anger onto a helpless
cat. He should always be allowed to come and go freely and at his
leisure. Who are YOU to judge him? You're no better than he just
because you're a homos apian. This is where all man's troubles began.
At the moment that he placed himself over other things NO LESS EQUAL
or deserving than was he them.

You presume much. And much comes from your own guilt. He probably
needed to go really bad but he could not. You should also be convicted
of false imprisonment at bare minimum.

If you do, beware PETA. They will personally camp outside your home,
bringing full attention to you, the doer of wrongful animal deeds, to
one and all. They will have you on the 6:00 news as a harmer of
innocent and helpless cats. One who refused their rightful attempts at
not being told what to do. You have NO RIGHT to tell them what to do
or what to eat or who's dinner they can and cannot tip over. Animals
can do as they please. And one day, they'll be nothing that you or
anyone else will be able to do about it but WATCH.

IBen Getiner

A long haired Calico female I had about 20 years ago was the poster cat for
feline revenge. Working second shift, I would nap in the afternoon prior to
heading to work. Punkin' would often come stretch out beside me. Sometimes
she would pester me to get up and get her some chow. She knew chow time was
approaching but got a little pushy about it at times. One day she was really
bad, biting at my hands, digging at my face trying to get me to turn over,
grabbing mouthfuls of my hair and pulling. I finally shoved her off the bed
and yelled at her to knock it off.

A few minutes later I felt her jump up on the bed and walk around down by
the foot end. Suddenly a very warm, moist glow started to spread around my
feet. I glanced down and there was Punkin' straddling my feet, squatted down
taking a whiz on them with her back to me. Of course she hauled as out of
there as soon as I started to move but the damage was done. She got me.

What on earth do you mean he is all over your mother when you feed
her. It sounds like you are treating your elderly mother like an
animal.  Why arent you and your mother dining together?  It is a real
insult in the German language to say you feed someone.  Animals get
fed. and babies.   I detect  hostility in your attitude towards your
mother and you are blaming your cat of being hostile.  Ha.  look in
the mirror if you want to see hostility.