Un derwear

Once a time,  my best friend, Lila told me a story about a friend, whose just bump out her head when we are on the road.
She asked whether I still remember about our friend (called him jun).

Jun and Lila are at same class from kindergarten until some high school.
Jun was known for not wearing underpants while on primary.
Many children teased him because of this.
One day, and finally he wear the underpants.
Children (and also Lila) know and can see  because Jun wear it after
That day, the children have a class from a killer teacher, who like to beat children with rattan.
Forget what the cause, Jun was one of the beaten children.
And the teacher told him "wah.. finally you wear under pant ah jun"
fyi.. jun tuck in the shirts not only inside the pant, but also inside the under pant

😖😖😖