Facebook is addictive. Especially if your job requires you to remain glued to your computer screens for most of the day. When Facebook isn't enough you'll probably venture off into websites like.. oh, here you are! And other websites that can provide you entertainment while you take a break from your .docx, .xlsx, .pptx and so forth.

But what if you end up spending way too much time away from your .docx, .xlsx, .pptx and so forth and become tardy at what you were supposed to be doing?

Two MIT doctoral candidates decided to build a keyboard accessory for people with minimal willpower. This accessory would shock them if they spent too much time on the social network or other sites.

Robert R. Morris and Dan McDuff estimated they wasted 50 hours a week on Facebook. To fight their addiction, they turned to the Pavlovian method. Using classical conditioning, Pavlov Poke monitored their Internet habits and sent mild electric shocks to their hands when they spent too much time on certain applications and websites.

"The shock's unpleasant, but it's not dangerous," McDuff said in the demo video. The shocks were so disorienting that the two ended up removing Pavlov Poke. Morris said he "did notice a significant, though temporary, reduction in [his] Facebook usage."

Are you an Internet time-waster? Maybe the Pavlov Poke is for you. Check out how it works in the video below: