OK, mentally aroused, no. Physically, yes.
You can make a man erect by strangulation. Even if the man does not like having his oxygen cut off, and dying of suffocation, he will get erect.
They've done studies where women were mentally/emotionally turned off or even revolted by things (they were shown porn), and they did all the electrical tests to see if their brains lit up with the stimulation. The women showed no arousal in the brain. Yet, their bodies had gotten aroused. Hard nipples, ever moistening vaginas, etc. Physiologically, they were showing arousal.
I have heard of rape victims who have gotten wet, etc, even tho they wanted no part of what was happening. The body does work independently of will sometimes. I've heard of that being used by defense lawyers. Fortunately, with decreasing success. It could well be where "Her body said yes" comes from.
If a woman is tied totally against her will, being violated against her will, and her violator strokes and plays with her vagina, she will get wet. Physical arousal. Regardless of how she may hate it. Just like a raped man being stroked to erection. Or a prostate exam causing one.
And pain can do this sometimes to some people. There is not much that applies to every human being. I doubt this would. But MANY are capable of this experience. Doesn't mean they'll be happy when they remember it. But it can happen. If pain or injury happens to the thighs or near areas to the genitals, the blood flowing into the area can cause physical arousal.
I've gotten hard lifting weights. Not cause I like it (I don't), but the exertion, particularly during leg exercises, makes more blood go that way, and I get erect. Which is reeeely bad.
Now, you can't make someone mentally/emotionally enjoy something they hate unless you re-program them. Sorta like the Manchurian Candidate. Or if they want to change that for whatever reason, you can do it thru exercises, hynosis, NLP, whatever.
But you cannot physically do something the other person hates, and have them ENJOY it, unless they are a masochist. But it does not mean their body will not respond as if they are aroused. Body and mind don't always synch up.
Christopher