I was called Joe Cool in high school, because I didn't talk to people, I just gave them this look. To me it was get the F** away from me...I guess other people thought it was something else.
In the Military, everyone was afraid of me, because I never said anything (no friendships, no pain when the other guys got killed). And I had a pretty good "kill" record (not that I'm proud of it...but I lived through it....), and so people probably wanted to call me something, (and probably did behind my back) but no one did to my face, which is funny, because I'm about the least aggressive guy I can think of if someone else isn't trying to kill me.