Testing a theory.

She shut the door to her room and quickly paced around excitedly and over aroused. “I turned on my own brother!” She sat on the bed and pulled down the spandex to uncover her rapidly hardening cock. “If I am that hot now, then tomorrow I’ll be a total babe!” she thought while beginning to play with her nipples “now to test to see if I am right about my growth spurts” she leaned back erotically thinking to herself “lets get bigger for brother!” and she began to masturbate, more horny than ever.

She was in fact so aroused that it took no time at all to climax and begin to orgasm. “Oh god, oh god, oh god” she throatily repeated as she shook violently on her bed. “AAAAOOOOHGH” she loudly moaned as every bit of her clenched simultaneously, and everything began to shudder as she finally finished ejaculating. This time was different from the others, this time the change was so profound that she could actually feel her growth. Her chest got heavier and her nipples strained larger, piercing the already tight tank top, her arms and legs lengthened, she felt the shifting of her spandex shorts as her ass grew. She felt every bit of growth. “Oooooohhhmmmmmm.” She moaned as the feeling subsided, and she fell back on the bed exhausted.