Jon continued pacing and thinking. It would be a lot easier to think if his sister and Athena weren't making such a racket on the other side of the wall. In fact it was getting louder, almost like they were building to a Jon stopped dead for a second, then ran out of his room toward his sister's. He put his ear to her door and could make out the teenage moans both reaching a peak. This was starting to turn him on, but he kept the thoughts in check by remembering that it was his sister making those noises.
As he listened the moans reached a crescendo and then fell to nothing. After a few moments of dead silence Jon opened the door and stepped into the room. There on the bed lay Zoe and Athena, both naked, in a relaxed '69' position. Both of them stared blankly with big grins on their faces, their minds paused and waiting for suggestions.