My housemate (we are college students) once said he was finding it weird his name wasn't in the list of students to take the exam of a programming subject he had but he couldnt find a reason to explain it.
A few days later he came into my room frustrated as hell but laughing at the same time. "I have to stop taking headphones to class... I've figured it out. I failed already for being absent because when the teacher registered the students present I had my headphones on e every time and couldn't hear him..." 😂😂😂