The Serpent's Embrace
You can feel his fingers against your internal testicles as they tighten up and begin to fill your members with seed.
Eagle Eggs
His internal testicles tend to produce quarts of eagle sperm when he cums. and it's slick, white, gooey and very viscous. it'll run out of my relaxed, post fuck cunt in a waterfall like fashion.
Dragons Lair pt 19
His internal balls produced seed like there was no tomorrow. the visual stimulation was huge, seeing 2 vents, both he had penetrated at one point. michael roared and got closer to the girls, pointing his dragonhood at klaedr's vent.
Messes and Mienshao
The dragon's internal testes churned with excitement, bubbling and tensing anxiously as he neared his peak.
A Forced Landing ("Project Unobtanium" series, #2)
At the other end of the useless flabby tube was were his internal testes were situated.
Climbing up the ranks
Where two patches of scales seemed to bulge out just a little bit out, roughly giving an idea where his internal balls were kept.
The Draconic Rite of Passage
The poor kobold's cock was painfully swollen between his legs, internal testes so worked up that the ground beneath the reptile's knees now sported splotches of absently drooled kobold cream.
Finding Your Better Half (Dragon/Merging TF)
Teasing fingers stimulated his internal testes through his slit as his other hand ran up and down the length of the alien cock. it wouldn't be long till he achieved the much-desired orgasm.
Low Blow Quest chapter 3
Cold bloods have internal testicles." "then where are-" morn tried to say before her own crotch exploded in agony. her mouth formed a perfect o as she cupped herself and fell flat on her face. ass high in the air she moaned in pain.
Damo's Ride.
Damo held up one weak hand to shield his eyes as rivers of scorching hot dragon seed started to blast from the cock he had just been mounted upon, drowning him in a sea of cream as the feral emptied its internal balls upon him, his fur soaking it up
Lost 2: training.
Wide-eyed, he could only clench his eyes and shed is salty tears as the paw squeezed his slit, along with the internal testicles, only relenting after what felt like eternity.
Compromise
As his internal testicles contracted, he could feel pulse after pulse of his thick seed fire deep into his partner's passage, before it was forced deeper still by ensuing blasts.