Tiff suddenly felt a odd longing for Katie. Katie had been her friend for years but Tiff had never felt sexually attracted to her before so this was a new experience.
"Katie," Tiff said. " This will sound strange, but I really want to be inside you now."
Katie blushed but said, "Well this will sound weird to but since you've grown those penises, I've had a strong desire to have you inside of me."
Tiff stripped off the tattered remains of her now too small female clothes and stood in front of Katie totally naked. Katie took the hint and stripped off her clothes as well also standing naked.
"Wow, Tiff," said Katie, running her hands over her friend's new body. "You've become totally male except that you have two penises."
"I know," answered Tiff. "But let's stop talking and get done to business." She gently pushed Katie up against the walk and inserted both of her throbbing penises into Katie's twin vaginas.
"Oh," screamed Katie pleasurably as Tiff thrust herself deeply into Katie. After a little while, Tiff's seed exploded into both of Katie's vaginas and traveled up into her now twin uteruses.
Tiff withdrew her now deflated penises from Katie just as Katie suddenly shouted.
"Tiff," she said. "I think you just impregnated me! I can feel things growing inside me."