IPO

Period of time in college where you get the sudden desire of smashing your laptop against the teacher's face.
Early symptoms include: Sleepiness, general irritation, need of throwing up after previous thoughts related to this word, sudden need of hitting someone pretty hard, etc...

In 5 minutes or so, he's definitely having IPO. Just look at his face, he could get no sleep last night for sure, and looks quite irritated.