Time for the next test. Walk Mitch through a non-obscene albeit stimulating web page like this:
Daily Dose of Delicious Girls - Men know why
And for each girl, ask him: "Do you think she's pretty"? Ask him if you weren't around, if he would want to have sex with her. Then ask him if you brought a girl home that looked like that for him, what would he do?
And let's get the lies going...