See http://en.wikipedia.org/wiki/Rickrolling. Rickrolling is sort of a musical hijacking, of some sort of public event, using the Rick Astley song "Never Gonna Give You Up."
I don't think this would count as an actual Rickroll, considering that the people who "got rolled" were in on the joke. Although having Rick Astley do the actual singing was something new.
thank you all!!!!!