I don't have toilet or sex dreams (never have, which apparently is odd), but one I've read is common that I will have is teeth becoming loose or something else being wrong with them.
One I had a lot in college was discovering during finals week that I had signed up for a class I forgot about it, and not attending it all term has caused an unpreventable fail.
I am really happy when I have dreams where I express anger at something, because the overwhelming majority of the time in dreams I am not merely weak but literally mute. Often a dangerous creature will be chasing me, but I can barely manage to control my body enough to run. Other times the source of fear will be a person who I didn't want to see again, like maybe a bad ex. While they won't be chasing me, I might be hiding from them because that's all I can do without the power to speak, or I might be speaking to them because that's actually worse - the dream is that they contacted me and I keep responding back when that's actually something I never wanted to do again.
To devil's advocate against the inevitable interpretation that the inability to protect myself is a self-pres fear dream, for me I've come to realize is that fear of weakness is about who I don't measure up to. Not being their kind. Not being able to relate to them, being separated from them on a deep level by what I've failed to do but that they have done with their strength and bravery, envy from a distance. This figure could be someone I admire or love, a real or imagined grouping of people who mean something to me, or it could be an ideal self. It is about shame and inferiority, not the literal concrete danger that the weakness makes me vulnerable to, not pain.
The exception to being proud of anger dreams is a recurring nightmare where I am being horrible to family members or otherwise people I love, if not straight up abusive. Like, screaming at them over something tiny, making threats, or one time straight up biting my mom out in public. Late last year my sleep was traumatically interfered with, and the after effects of that included nighttime panic where I woke from one of these about a quarter of the time, although the dream content has zero to do with what I'd experienced that messed up my sleep.
What the dream content above obviously is about is that this has just always been a big fear of mine, that I have the capacity to be an abuser. The first thing that comes to mind when questioning where that comes from is that I was very temperamental, unloving and angry as a teenager at home, and while that might sound typical, I don't know and don't care. Also I had anxiety adding to it, so in that way it was not normal. To act in such a way would be beyond the pale with an adult lover, and I hope like fuck it is not as easy as I fear in my dreams for my will to fail in the face of stress and to regress to something juvenile. But another origin of the fear that my current therapist introduced me to, and that I was amazed not to have thought of before, is that it's not an uncommon fear in people who were abused to fear that they could abuse. I did not consider myself abused because my family wasn't abusive, but she suggested that bullying at school is a kind of abuse and can have similar impacts. Come to think of it, a couple school authorities went even more severe with me than that when I was having panic attacks. So that makes perfect sense too.