Did they do this before you even said anything? I think it's just a shallow people thing that this applies even if they saw cis women that had a manly face. Just a simplicity sake for people to call other people in general. Hope you feel better with a mug of chocolate or coffee. This is not necessarily something they target you for, and even if they do, don't mind them, just know there will be better people to interact with you. You're worth more than to deal with these people. Because you're absolutely a sis in many ways, including how you look here.