The Dance Teacher Tore My Son's Leg Apart Stretching It, So I Went on a Rampage

After my beauty treatment, I got a message on my phone from my son's dance teacher: "Chenchen's mom, Chenchen isn't very flexible. When I stretch his legs, I'll press them down as far as I do for the girls, okay?" I remembered that the teacher was a college classmate of my best friend, so I simply replied, "Okay." When I got home, the teacher sent me another message: "Chenchen's mom, it's bad enough that Chenchen has no talent, but now he throws tantrums and refuses to do his stretches." I opened the video the teacher had sent and saw that Chenchen's legs had already been bent out of shape. I angrily called to confront the teacher, but she didn't seem to care. "If I don't punish him, what if the other kids learn bad habits from him?" "Don't worry, I only made him hold the splits for two hours."