Intimidation
Here we go, more things on this list you can use to get your way, but this time it’s with intimidation, which of course we do not support. Try staring at someone’s forehead while you talk to them, it will most likely make them feel insecure and smaller than you at that moment.
They may even react with their own hostility, so do not say we did not warn you that violence could erupt if you stare at someone’s forehead for too long. Staring in general is not a nice thing to do, so really pick the right time and place to engage in it.