Through An Immature Lens

(I am attending a course about glasses and how to order them according to the customers’ needs. Our teacher is talking about common mistakes done while ordering them and comes to the section about the distances seen by wrongfully-ordered glasses —  what you “can” see and you “won’t” see clearly.)

Teacher: *mentioning this and that mistake* “…which leads to the person missing out on about five inches of distance, where he won’t see things clearly.”

(For a moment, one of my female colleagues looks at him in confusion.)

Female Colleague: “Do you even feel five inches?”

(The world turned white as I threw my head back and let out a childish, uncontrollable, howling laughter, which led to tears in my eyes. My colleagues looked at me in confusion, and one after another slowly realised what she had just said.)