Rick Roll your friends!

Feeling a bit mischievous? Why not try Rick Rolling your friends? It’s fun, it’s easy. All you have to do is bait them with a link you think they’ll be interested in, but covertly, the link actually plays a Rick Astley video.

Here’s a wiki article that explains the whole thing:

http://en.wikipedia.org/wiki/Rick_roll#.22RickRoll.22_internet_phenomenon