To provide a problem so interesting and difficult that the target is compelled to cease whatever they are doing (eating, reading, walking) in order to think about it.
Most effective on math professors, science majors, and similar.
Term coined by Randall Munroe, author of the webcomic XKCD.
"I started thinking about the effective resistance of an infinite network of resistors, but then I realized I had self-nerd-sniped."
"My friend totally nerd-sniped me! He suggested this problem and next thing I knew I was late to class!"
Origin: Battlefield:Bad Company 2.
Verb
1) An in-game act of using any vehicle, primarily a M1A2 or T90 Main Battle Tank, and killing an enemy and/or an objective from a distance at or greater than standard vision at the firing position.
2) A term for when one person seemingly, instantly steals the attention between two people, be it the interest of a boss or the interest of the opposite sex. On purpose, or unexpectedly.
I almost had the perfect girl. We had similar interests and made each other happy. But then, some rich guy saw us together and Tank-Sniped me by showing her his Porsche. She hasn't called or text me back since.