Xavier coughed to get their attention, realizing they hadn't followed his meaning.  They were not quite as attuned to his desires but he would keep training them until he hardly had to speak.  "I want you two over here, I want to see which one of us can hold out the longest to the two of you."  He was offering the two newer girls his hard cock, heavy balls, and Larissa's big tits and aroused pussy.  He didn't really feel it was fair to Becca, but was anxious to see just how quick of a learner his bright young Canadian could be.