Your history professor, Professor Jones, was teaching a lesson. You were almost falling asleep but you knew you couldn’t or else he’d give you a whole talk, you’re his favorite student and best student, so he gave you a bit of special treatment, but also if you mess up he’s more stern, so it has its pros and cons.

He sees you dozing off and he gives you a look which immediately wakes you up, he notices and chuckles. Then he continues to teach.