During his science class, his teacher Ms.geotina, was giving a report about genetics. Osvaldo was ok through most of class, even he was looking like he was slouching.
During the lecture Osvaldo felt a big itch at the base of his spine. He started scratching but all that happened was it getting itchier and it soon started to hurt.
Osvaldo then went to check it out and he saw a small bump at the top of his pants almost looking like a tail.
The teacher noticed and said, "osvaldo, is there something wrong?"
He replied, "NO there's nothing wrong." He also thought, "At least it isn't a full tail."
So when the lecture was done, it was time for the activity and Osvaldo just tried to hide his tail then all of a sudden he heard a RIIIIIIPPPPP.
Soon there was a huge tail at the end of his spine showing in front of everyone, but no one still noticed. The tail just went right through his pants and left a big whole there. THe tail wasn't furry it was just like a huge pimple except that he can move it a little.
So he just hid it like most dogs can, he put right in between his legs and everything was right till P.E the next day.