Yes, by all means go ahead and get your sample

My wife answered quickly, "By all means Doctor, go right ahead and collect your sample."

"Thank you Jenna," Dr. Nolan replied, "I think this should be interesting. He is very large, you were quite correct that his extraordinary size precludes you having intercourse with him during your pregnancy. The massive size of his shaft and the large glans, that is the cock head, must really provide excellent stimulation during intercourse. Do you come easily when he thrusts into you?" Dr. Nolan guided me back into the chair as she was talking to my wife and went down to her knees in front of my cock. Her eyes were level with my fat cock head and she gripped my thick shaft with both hands and started to pump my hard cock.

"Yeah, I cum really easy when he does me, his cock seems to always hit just the right spot inside me to make me cum."

"Fuck, fuck, fuck," I moaned, not able to contain myself anymore. "Fuck you're making me cum. I'm going to blow my load."

She reached down and grabbed a little cup and put it at the tip of my cock to collect my jizz load. My wife tried to warn her, "He really shoots a lot. You might want a bigger cup."

"Ahhh, fuck I'm cumming," I groaned loudly as I reached orgasm and I could feel the first long shots of jizz rocketing from my cock. I splattered her face, neck and front of her lab coat with my cum load. Waves of pleasure rocked through my body as I watched she sat back startled, falling on her ass, her hand releasing my spurting cock. I gripped my jerking shaft and stood up pumping the rest of my load on her lab coat as I stood over her jerking off.

"I tried to warn you, Dr. Nolan," my wife said with a grin. "He's messy boy."

I stepped back from Dr. Nolan and sat down in the chair again, my big boner going back to half mast as I recovered from my massive orgasm.

Dr. Nolan regained her balance and moved in front of me again and then reached down and gripped my cock again. She pumped my fat cock head a few more times and squeezed the last few gobs of cum out into her sample cup. "There we go, I got the sample I needed after all."

Then she stepped back and looked down at her cum covered lab jacket. She unbuttoned it and took it off, then she noticed that her silk blouse was wet with my cum also. She unbuttoned it and slipped it off reveling her sexy bra and swelling cleavage to my view. She used the blouse to wipe my jizz off of her face and neck. It was sexy as hell I can tell you that. My cock was bouncing back at full mast by the time she got done with her little show.

She looked at my wife again and asked...