Underestimation 

Beware. One mistake of all the boys out there is underestimation. My guy friend once decided to make fun of me, a girl, for being hardcore a gamer. Let's just say a bet was made. The rules were quite simple and the prize quite worth it. The prize was the bragging and linking rights on social networking sites. It was purely for embarrassing the loser. So once he was done fluffing his feathers, the controllers were booted and the game begun. By the end of the game he had grabbed my controller multiple times and thrown it and also attempted to remove my battery pack. Thank goodness for little sisters because his gladly posted all about our tournament and spread the word. Who says one person can't make a difference...