Most of us have experienced the phenomenon of the annoying seatmate. On a plane, in a bus, in a waiting room, anytime people have to share a space.

Sometimes it's too much talking. Other times, it's armrest hogging, crowding, or bad personal hygiene. And, in today's world of smartphones, tablets, or anything else with a screen, you've got your nosy eavesdroppers.

Take a look at what this guy does when he suspects his window seat neighbor of being a bit too interested in the guy's Facebook chatting:

You have to give the nosy dude credit for his reaction upon realizing he was caught. And, how many of us will try this tactic next time we fly?