lawak warisan

This joke told by my mom happened one day in her classroom some 45 years ago.

A student forget to bring her English exercise book to the class. The teacher was usually a fierce person, so she was afraid that he would scold her. But he didn't. He just gave her a warning. Then he said to her loudly,
"You are lucky today, aren't you? If you are not, ha!"
He didn't finish what he was saying, but slowly muttered to a couple of students at the front seats, making them giggle.
During recess, my mom asked them what the teacher said.
"Ha ha ha... If you are not 'lucky', then you are bini le!"