A strange mammoth looking costume was on a tray, it was way bigger than her and looked almost real, it was very fluffy and most of the fur was on the chest and groin, it was a blue color with some green spots, the mass of fur on the chest and groin were green too, the pupils of the eyes were green and the tusks were a normal color, the trunk was very long and reached all the way to the knees of the suit, the suit looked very fat and when she poked it... it jiggled. She found a fuzzy tail that looked like a lion's with a green tip, she then looked in the mouth and found out there were sharp teeth. As she inspected the suit she realized... the suit looked like a male, she quickly inspected the groin and there she found a furry sack with two large testicles inside with a large sheathed penis.
"U-um I think you gave me the wrong suit... it's male" She said worriedly
"Incorrect, the suit would have been the same for anyone" a scientist explained
*it's just a costume, don't overthink it* she thought to herself
She undressed and admired herself in the mirror before she had to wear the costume, she jiggled her breasts and admired her figure, she grabbed the costume and lifted the costume off the table and it slammed onto the floor, she noticed something else, there was a mohawk going down the back like a boar's. Inside the mohawk on the back there was a small slit where she could slip inside. Before she put it on she asked...
"How long will I have to wear this?" She asked
"About a day, we'll let you keep the costume and your payment" a scientist explained.
With that she slipped the suit on, the inside was very fleshy and strange, she felt the side and noticed it was slimy
"Weird" She said as she slipped into the arms and legs
As she closed the seal she began to expand and transform on the inside, she slowly became the internal organs and skeletal structure of the costume. She opened her eyes and noticed she was taller.... no.... HE was taller. He could feel the new organ between his legs, it was strange.... but it still fell... good? He noticed a mirror on the wall and walked towards it, he looked and gasped. What stood in the mirror wasn't Chloe... but a 6'8 mammoth hybrid, he flapped his large elephant like ears and inspected his hands, he had three fingers and one thumb, the nails were thick, the feet were like stubs with four toes covered by thick nails. He tried to move the trunk... it went up and scratched his head. He poked at his stomach and it jiggled, he then he inspected his chest where moods had replaced his old breasts.
Then it hit him...
"OH SHIT I'M A GUY...wait... I'M A FREAK!!!" Chloe screamed
He looked on the bright side... it was only a day.
He noticed a pair of large shorts on the table, he took them and put them on. They were very uncomfortable, then a scientist called from the speaker.
"There's a slot in the back that you put your tail in"
Hey forgot he had a tail, he slid it through then inspected himself more. His large bulge was very noticable, he decided to inspect his new...package more. He pushed past the Bush of fur and found his basket ball sized balls and his penis that was currently 10 inches, he began to poke and feel... that aroused him. The penis slid out of the sheath and slid across the floor it was now 2 feet, he noticed he had a horse cock...
"Oh my gosh... I didn't know this was so sensitive" Chloe said as he tried to shove it back into his pants
It then shot up fully erect, he was scared when it began to pulsate. It felt good but...strange, she's had an orgasm as a girl but... it wasn't nearly as good as a guy's ejaculations, suddenly a stream of white sticky fluid shot out of the head.
He had just shot out cum...
He turned his head and noticed that the scientists wrote everything down.
His new penis slid back into it's sheath and he put it back into his boxers.
"Ok, now we'll test the ability of converting back to human form. Grab the back of the costume and try to tug it apart" a scientist explained.
He grabbed the back of the costume and...