You answer it, it's Josh.

"Hello?" You say into the phone. "Hey, what are you up to tonight?" Josh asks. You think about it and respond with, "Nothing. What did you have in mind?". "Well it's Tim's birthday and I wanted to something special for him, do you have any ideas?" He asks, you can tell he is hinting as something. "Me and Audrey could come over and give him a birthday surprise." You say what he was too nervous to ask you. "Oh, babe. That would be great, if you could somehow convince Audrey to do something like that." He says. "You leave that to me, we will be over there at 7." You say to Josh. You both say goodbye and hang up the phone.

You call up Audrey and tell her that there will be a birthday party for Josh's roommate tonight at 7. You don't tell her about you and Josh's plan to have an orgy. She agrees to go.