Lecturer: Hey guys,
I know you're all looking forward to getting your final exams back.
But I’m going to be frank with you.
ⓑWhen I gave out the marks I had a hangover.
So I marked them half asleep.
I'm sorry. ["Sorry for that" is fine, but it's too flippant even for something so ludicrous as this scenario]
And I want you guys to double check your own paper. Just don't change the answers, OK?
Just watch the lecturer get thrown out on his ear after this!
Student or Learner