There was just something about this horse that made her want to keep it, she didn't know what it was but she really wanted keep it.
She thought hard about what caused the genital swapping, she then realised that before every time that her genitals had changed, she had lied.
She then swore to herself that she would not lie until something more appealing turned up.
She parked outside her house and entered, it was quiet however she knew that her parents were at work and her brother would be with his friends, as such she decided that she would do her homework so she didn't have to lie about it.
Halfway through her homework, she thought about her friends and for some reason got arouse, which made her mighty stallion's cock go long and hard, she quickly ran to the bathroom and jacked off into the toilet, getting a lot of pleasure in the process, before wiping the end and rushing back to her room where she put on her extremely baggy trousers and continued with her work when the doorbell rang.