What is Denda Ketuk Ketampi?

Question

I checked but still don't understand. I only know if serious may cause presence of blood in urine

Answer 1

那是一种体罚（拉耳朵）。

参考： 

https://ajar.com.my/2018/11/27/ketuk-ketampi-rupa-rupanya-senaman-mencerdaskan-otak-adakah-itu-sebab-ia-begitu-popular-di-sekolah-sekolah/