https://www.saveeditonline.com/
If you download your save, go here and turn the penis tag to true, dload and upload the modified save, you can have both. Don't know if it alters the character image though.
Alternatively, Greater Slime
how do I do it on the phone?
If you're using a browser such as Brave, you can toggle the Desktop Site button in the drop-down menu from the three buttons.
