But while the lecturer is explaining his PowerPoint slides in front of hundreds of students, erotic noises suddenly fill the room.
Sounds of amorous gasps and screams from the porn film echo through the lecture hall while the students erupt in laughter.
Finally, he catches on, and starts tracing the chord on his headphones back to the laptop - at which point he receives another huge laugh.
Sounds of amorous gasps and screams from the porn film echo through the lecture hall while the students erupt in laughter.
Meanwhile, the man on the laptop appears totally unaware as to why the others are laughing.
He attempts to plug the earphones into the machine a couple of times before slamming the computer shut and storming out of the lecture hall, visibly stunned and embarrassed by his clumsy ordeal.