A number of women I know report that they often receive requests for intimate self-portraits on social media, and my bizarre sense of humor struck upon this solution to indicate disdain before such requests result in blocking these impudent individuals.
I created a 600x400 rectangle in my Paint program of choice and filled it with a hexadecimal color key that approximated human flesh. Many such shades are lumped together under the blanket name of, "nude." You can play around with a color wheel or use a color picker to select from a photo. Experiment to find a method that works for you. Then, just for extra fun, add a text box with that specific color hex code to emphasize the point.
Sure, it'll probably go over their head, but why not?
Yes, I know this is probably deemed racist and discriminatory and caucasian-centric by a certain type of person, but you're free to use whatever hue you like and make your own. This is just a quick post to share an idea if you want to slightly tease rude people on the internet, so feel free to change it up to suit your circumstances, or just save this image and use it if you prefer that lazier option.
Post your nudes (hex color codes, not selfies) below if you think this is a fun idea!