She teaches John a new position

"And now that that is solved, let's continue with today's topic." Dr. Valentine unbent. "Please get undressed and lie on the couch face up." John did as he was told, not doubting her as everything she told him had helped him so far. Naked and with a boner he lay on the couch. "I'm now teaching you a position, that will make penetrating your asshole easier and feels good too." She grabbed his lower legs. "Now keep your muscles relaxed so I can get you into position. Bend your legs like you are sitting." Dr. Valentine moved John's legs in a sitting-position despite he lay on his back. "Now lift up your hips a little, push out your ass and spread your legs." The therapist pushed his legs apart. "And in that position you have easy access to your asshole through your legs." With that John was lying on the couch with his legs spread like he was eager to get fucked.

"Thanks for the help." He said feeling a little uneasy in that position. "But what do I do now with my erection? Can I jerk it off?"