I can relate to what you guys are saying. I have a very strong presence, and people get very agitated when I'm around them (girls and guys). I always hear that I look like Al Pacino or like I came right out of a mafia movie. I'm 20 years old btw.
I've observed some things and was wondering if some of you guys can relate to this. For instance, when I'm in the computer lab or in class, where I'm in close proximity to other people (guys and girls), their body language screams agitation. Very uneasy. Sometimes it reaches a point where I get nervous because I'm making them nervous through their uncomfortable body language. If I'm looking at the instructor or reading something on the computer, people think I'm looking at them. They sometimes under their breath go, "uhhhhhh" like I'm doing some shyt to them or something. Sometimes they cover up a portion of their peripheral vision such that I won't be seen in their frame of reference. Also, girls do the "hair trick" where they use their hair as a means to look sideways to see if your looking at them since they are "so sure." Interesting to say the least.
What I find interesting as well but makes sense is when I see most guys that are good-looking AS WELL as confident, they just smile at me and give me the, "i know how it is bro, i know how it is." If the guy is with his g/f, who is most likely hot or cute, they both look at me and smile, like "yeah, we know how it's going down." Kind of like an acknowledgment. However, when there is a average-looking guy with his g/f, he immediately starts touching her or kissing her in front of me to show off or some shyt. I just laugh about it though. However, there have been instances where good-looking guys start touching up on their girl when I enter into the proximity. That's why I stressed the confidence portion earlier. Such actions give off the insecurity vibe IMO.
If I can think of some other examples, I'll post them up. Do you all have any examples to share?