"I'm tiered of watching you girls play with yourselves. Let's see some real action for a while... A, you are going to be a man for a day. Have fun!"
With that there was another flash and Jessie found her body miraculously transformed. Her tits shrank to nothing, her muscles bulged, she seemed to be a bit taller and between her legs hung a huge cock and a set of balls. She could feel the testosterone affecting her/his very thoughts.
Jessie found that he had an overwhelming urge to have sex with Annie, whether she wanted it or not.
He lunged out and grabbed the hapless female, easily out-muscling her, and brutally mounted her. His cock found it's way into her pussy, thrusting deeply until he came. He then forced Annie to lick the fluids from his member, and suck on it to maintain his aroused state.
Jessie was having 'a ball' he couldn't believe the pleasures of the male orgasm.
He passed the next few hours having his way with Annie, enjoying every minute of his temporary power over her.
Too soon the day had elapsed. Jessie found himself weakening and feeling a bit tiered. He looked down and saw... DAMN ... Boobs.
From the far side of the cage Annie watched as Jessie reverted to her former self.
"Girl, I'm going to enjoy paying you back for this...", was Annie's only comment.