Classes started today. All of my professors can speak decent enough English, but my differential equations professor needs a bit of work. He brought up Newton's laws, and asked us what they were. The whole class stared at him because we all thought he said "Ethan's law."
Trust, things don't get any easier later in the semester. I would suggest trying to get to sleep earlier. Also, lay off the energy drinks. Needing them to get through the day is a bad thing; you shouldn't need them at all to get through normal days.