You looked up at her when she said those words. Her arm alone was almost as long as you were tall. "This is hardly fair."
Cindy smiled, then shrunk down to your size. "Better?" You nodded and thanked her. "Then come on." She walked with you to the side of the field, where a table and two chairs were waiting. You said down, your teammates taking position behind you, her teammates, still at their full height, looming ominously behind her.
You got into position. "Ready? Go!" You immediately pressed with all your might. You had to surprise her. It worked. Her arm was being pressed down. You saw her gritting her teeth. Your teammates cheered, while hers booed. Of course, the girls easily drowned out the guys. But that did not matter. You were winning. Come on, you thought. Her hand lowered even more. But then it stopped. You pressed and pressed, but it did not move.
Then it was her turn. The girls cheered. The noise they made had you lose hope even more. Slowly, your arms moved back to their original position. You imagined yourself not even reaching up to Cindy's knees. No, you could not let that happen. You focused, trying to bring up all your willpower. The arms movement stopped. Your guys cheered again.
Slowly but surely, you brought her arm down, more and more. You managed to smile. "Not so strong when you're this size, right?" You looked up with a taunting grin. But your smile vanished and was replaced with a shocked expression. Cindy's face showed no signs of exhaustion. She merely looked annoyed.
You became even more shocked when Cindy's biceps suddenly grew. You pressed as hard as you could, but you could as well have pushed against a steel bar. Cindy's biceps and shoulder muscles swelled even bigger. Her arm was now twice as thick as yours. Then, in not even a second, she slammed your arm into the table, breaking the wood.
You screamed in pain. "Damn, what was that for!?"
She just sighed. Suddenly, the pain was gone and your arm was healed. Still, she had cheated. "You cheater!"
But Cindy just handwaved the accusation away. "Now listen. You know very well you cannot beat me at arm wrestling. But because your team was already losing, I decided to give myself a little less strength, to equal the ground. But you had to be a dick about it, so I just reminded you who is in control." The giant wall of girls behind her all crossed her arms, looking down on you with accusing faces. Cindy herself put one hand on her hips, slightly tilted her head and slowly grew back to her previous size.
You gulped, then you lowered your eyes. "Alright, I'm sorry."
"Fine, then let's finish the game." Cindy smiled maliciously.
The next instance, you felt yourself dwindling down. You watched helplessly as Cindy and her team rose higher and higher, until eventually, you were eye level with their knees.