Confusion!!! Which everybody have

Y poem is said to be pom.

Ohh god not again today I hav math class when I entered the class I listened so many girls shouting laughing doing stupid stuffs. I asked everybody but no one responded Thn I came to know y they were shouting.
They were shouting coz math teacher is absent YAAY😜......
But u all know na tat situation which everybody say kabhi khushi kabhi gham same happened when math teacher is absent english is present she came to our class. She told me to read the Pom. I asked her wat is Pom she told me poem is said as Pom
Strange really really strange u all say me y a poem is said to be a Pom. I know y but I want u r answers.
Every confusion has a solution.