Why does anyone say not to get angry about this shit? If someone grabs your body you are entitled to get angry. Your adaptive equipment counts as part of your body for this purpose, especially if people are also grabbing your meat. Maybe if more disabled people would rip the heads off people who grope them, it would happen less. Try a very loud "DON'T TOUCH ME THERE!"
Also, if nonverbal, an air horn should make gropers jump away from you.