Bill started to pull his pants down, right in the middle of the store. His eyes darted up to Tammy as he started to panic. It almost seemed as if his hands were moving on their own as they removed his boxers. "Help me Tammy!" Bill cried out as started to slide the panties up his legs.
Tammy watched in horror as Bill pulled his pants down and started to put the panties on. She almost didn't believe it was happening.
Bill now had the panties on fully and could feel his penis and testicles start to contract and shrink into him. Bill doubled over in pain for a few seconds until the odd sensations from his crotch disappeared.
His eyes quickly darted around and he noticed that his crotch was now flat. He pulled the panties away from his skin for a second to do a quick check, only to reveal that he was no longer a he where it counted. He was now a she.
Bill once again looked up pleadingly at his horrorified girlfriend. "Please Tammy do something." Was all Bill could manage before he spotted a lacy black bra.