"Imagine you mom naked jumping up and down."

"WHAT?" John screamed as the first rope of cum rocketed from his cock. Dr. Valentine could clearly see it was too late to stop him from cumming, but she continued.

"Your mom's naked! Her breasts are bouncing all around! She's glistening in her own sweat and she's moaning your name!"

"Fuckfuckfuck" John continued to pump and spray his seed all over her office. "Shut up!"

The doctor complied as she watched John finishing. John Released his grip and fell back into the couch.

"Well that was quite interesting." She mused.

"What?" John was out of breath.

"Well it's just that... well I mentioned baseball and you were fine. We did some complex math and you were fine. But the second I mentioned your mother you started ejaculating everywhere."

"What? Ew! No! Gross!" John protested. "I was already cumming and you started saying that disgusting crap!"

"John, I was right here watching your penis the whole time. You weren't coming yet."

"Whatever" John felt like dying.

"And even if you were, the thought of your moms breasts bouncing and dripping in sweat didn't make you feel like stopping?"

"I- it just feels so good! I can't stop! Like you said last time I just can't help myself!"

"Of course you can't help it," She placed a comforting hand on his shoulder. "I mean no one would choose to be attracted to their own mother."

"I'm not!"

"John, I'm your doctor, you need to be honest with me." She stroked his chest as used her other hand to wipe his cum off his stomach and thighs. "I won't ever judge you. This is a safe place." She whispered as sensually as she could. John was starting to grow hard again, just as she planned.

"Now tell me John," She said as her cleaning hand reached his cock. "what does mommy look like?"