A teacher questioned a student, “How many kidneys do we have?”

Four!” the backbencher responded.

“Four? Haha,” the teacher laughed, known for ridiculing students’ mistakes.

The teacher then told a front-row student, “Bring a bundle of grass, because we have a donkey in the room.”

The backbencher added, “And for me, a coffee!

The teacher, now furious, kicked the student out.

As he left, the student explained, “You asked how many kidneys ‘we have.’ We have four: two of mine and two of yours. ‘We have’ is used for the plural. Enjoy the grass.”