The subtlties of male agression...

...those moments when someone harrasses you just a bit ("You waiting for the bus?" Then, "Hey, you could be single!" as you give them a suspicious look, then, as you move a bit away, "Don't let me scare you."), just enough to confirm that yes, their sudden regard has set off your defenses, whereapon they withdraw, having accomplished their goal - of reminding you that you are prey in this culture.