On your breasts.

You could tolerate your fiance's sperm in your mouth, but this amazones was a stranger. You would not allow a stranger to empty himself, or in this case herself, into one of your orifices. So you released her cock from your mouth and focused on the boobjob.

Your captive had already gone beyond the point of no return. She would cum any second now. You gazed at her cock, peeking out from your cleavage. You wanted to see her sperm leak out.

Then the amazon moaned, and a string of sperm shot out of her cock, straight into your face.

"Eek!" You screamed in surprise. You had not expected it to shoot like that. At least it never did with your fiance.

You felt the cock throb between your breasts some more. Warm splashes landed on your chin and dripped down across your collarbones.
When the throbbing stopped, you looked back down. Streams of sperm were running down your breasts. There was so much of it. At least trice as much as your fiance ever produced.
How could that be? How could a hermaphrodite, one who was more woman then man, have a cock so much bigger and greater.
How come a woman could produce more semen then a true man.
"Wow, that was fun." A voice suddenly spoke.
You were pulled out of your revery and looked up at the owner of the object you marveled. The amazon smiled down at you.