WoW... He had a CoW.

Preface: Professor Mullen hates students on electronic devices during class.

...

It was a chilly day at the University of Oklahoma, and I was sitting near the back of my Physics class, as I always do because 310 students induce claustrophobia. On the front row sat a young man, disheveled, wearing muted clothing... basically a teenage boy who rolled out of bed. He was typing something on his Dell laptop, a small-ish one, nothing fancy, but as I've recently discovered, could have cost him no less than $900. 

Enter Professor Mullen. 

"Are you on your laptop???" He looks over the back of the monitor to peruse the screen. "Tsk, tsk, tsk. Don't bring your laptop to class!" Slams the lid down on the laptop and confiscates it, setting it on his desk. "I warned you...." Exit the caustic professor out a side door, only to return with a hefty hammer. Mullen approaches the captured laptop with clear malice and raises his fisted hammer... only to set it down. "No... that won't impress any of you." Exit the slightly crazed professor out the same side door. We wait in anticipation, laughing nervously, expecting another scary-but-not-funny joke. 

Enter Mullen carrying a styrofoam bin, canister of liquid nitrogen and work gloves. The class laughs outright... what is he planning to do?... he can't do anything or he'll be sued... we're not paying good tuition money for a lawyer! The professor places the laptop in the styrofoam, pouring the liquid nitrogen over it, sending dry-ice fumes drifting over the desk. He stops, watches, then picks up the laptop and flips it... as if cooking an omelet. "Have to be sure to get both sides."

The class is now sitting on the edges of their seats... "Well that can't do anything to it... everyone knows that... it'll just freeze the battery, but it'll be fine once it thaws out..." murmurs circulate the classroom.

The now somber and slightly peeved professor retrieves the laptop, "Well, this won't do anything, it's just liquid nitrogen. However  this will."

He slams the laptop to the tile floor, shattering the computer into small bits. 

"DON'T BRING YOUR COMPUTERS TO CLASS!!!"

The young man leaves class. Moral of the story is... never sit in the front row.