The Head-of-Household challenge was a game of mental agility. Each contestant pairs off with another to answer quick-fire questions about the previously voted-off cast. Kalia kept winning round after round until she was last person standing. She seemed genuinely shocked and delighted to be the new HOH. Last week, Brendon who was just cast-off, tormented her. Who will be Kalia's victim?Big Brother Thurs., 9PM on CBSMore... (http://www.huffingtonpost.com/2011/08/05/big-brother-kalia-is-hoh_n_919942.html)