Massive Conversational Fail

(I’m a mature science student in my first year of university. When it comes to choosing optional modules for the second year:)

Me: “…so, I’d like to take the optional history module, assuming I don’t massively fail the exam coming up for this semester’s optional history module.”

Adviser: “Don’t worry. When have you massively failed at anything?”

Me: “Well, when I was fifteen, doing GCSEs. That’s why I’m ten years older than everyone else here.”