[Skeleton]

I don't think you're 'being a little girl' at all. This guy is meant to be your friend and occasionally, friends might mess around and insult each other a little but what you've said he has said isn't funny and if he doesn't it all the time, it's taking it too far and it isn't right that you and your friends just let him do it. Chances are if he is doing it when you're around certain people, he might be trying to show off in front of him and act big which is why he is a nice guy most of the time, apart from when you see certain friends.

Have you spoken to any of your other friends about it to see how they feel? Maybe if more of you stand up to him and tell him to stop, he won't respond by insulting you and he might actually listen and he knows it's getting to a few of you rather than just one of you.