Patti explains the test

"Matt, like I told you, I fear you are suffering from 'anal obsession'." Patti says.

"The test to see if you suffer from this is relatively simple. You will be exposed to a female ass in a sexual situation, and if you can keep from sticking your penis in it, then you don't suffer from it."

"Now, you can choose to go through the test with my assistant, or we can use Millie. Which do you prefer?"