Ty was really impressed with how Jason was adapting to walking around on four feet and the addition of another massive cock. Just then a though occurred to him on how to help him double up some more.
Ty concentrated hard and a small tender knot of flesh started to grow directly behind Jason's front set of balls. After just a few moments he had another perfectly formed asshole. Jason had barely noticed the new addition but Ty wanted him to test it out.
Kneeling down next to Jason, Ty took the gigantic rear prick in his hands and stroked it a few time eliciting a moan from Jason. The massive member was soon drooling clear pre by the pint. Jason could hardly keep still on his four legs as Ty positioned the swollen tip against his new opening.
"Oh yeah Ty, that's perfect. Thanks for helping with this, its been so long since I last fucked myself." He grunted while starting to thrust his rear prick forward.
Ty was more than happy to assist as he guided the well lubed head and Jason slowly started to push in. His enormous cock was slowly embraced by his front anus. His rear hips bucked a bit as he thrust his dick in deeper in and he started to really fuck. His front cock was just as hard and slapping on the floor with its heavy girth as he writhed in pleasure.
Ty stood back and admired what Jason was able to do, the sight of his friend fucking himself with that incredible cock was getting him harder as well and a little bit jealous.