"All right, I give!" John reluctantly agreed.
"No," the giant smirked "I'm giving, you're receiving." John's captor removed his towel and turned John around, quickly stripping off the remains of his clothes also.
John braced the toilet seat as the giant plunged his cock into John's ass. John was surprised to find that it didn't hurt. It was almost as if he was able to stretch and accommodate the huge member.
The giant continued to plough into his prisoner, and said prisoner was beginning to moan out loud, enjoying the experience. As the sex continued, the giant's balls began to swell. Soon, his ball sack hit the ground, swollen beyond belief. John could also feel the giant's dick grow and stretch out his hole even more. Looking backwards, John could see the Giant was lost in the feeling.
The giant suddenly stopped and gave a large groan. His balls had managed to lift his feet off the ground! John was worried, could he handle being filled with so much seed? The giant's penis, now fatter than either of john's legs, began to quiver.
'Looks like we're going to find out' John thought to himself as he prepared for the incoming flood.