Most of the time, insults roll off of my back like water. Every so often though, I happen to have colored my back with crayola washable markers to create a delicate, intricate design, and that water destroys it and I have to go back and color in all the damage.
Insults that have stuck with me since I've received them:
"Dyke" - I get the whole 'If you wanna be a man go dyke' a lot, but when it came from a friend that I thought knew me much better than that, it truly did hurt. I am who I am, whether that be something a male or a female typically does.. But it hurts so much more because it's turning something my friends may truly be into some sort of insult. It's not the word.. its the intentions of the word to be insulting. Trying to box me into a some label just because they know I don't like it.
"You can't" - I cannot stand this saying. When someone tells me I cannot, I just want to smash their face in and shout, "I'll tell YOU what I can or cannot do!"
"Flirt/Slut" - I get this one a lot just from my NF-y ways of connecting to people, and in the military if you aren't a bitch, you're a slut... which brings me to my next one..
"Bitch" - I get this one a lot when I work with other females. I'm still not sure what makes me incapable of communicating as efficiently with them.. I act the same at work, but I get wildly different responses.
"Ugly/Fat" - These used to bother me growing up. I don't much care now a days, but the fact that they did bother me as a teenager keeps them on the list.
I'm sure there are more, but I seem incapable of thinking of them at this time. This is the main list though.