The University of Oregon's all male acapella group, called On The Rocks, recently Rickrolled an A train—getting on at Chambers and headed up towards 14th Street, they managed to cover the entire song.

As you can see, straphangers were mostly disaffected... or maybe they were thinking, "didn't Rickrolling get a moratorium two years ago?"

UPDATE: Kelly Reeves, internet meme expert from Urlesque, tells us, "There hasn't been an official moratorium on Rickroll, but there are definite things that have led to it not being as popular or cool to do anymore (like new trends, or when it hits the extreme mainstream). That said, since it is so well known and belongs to the collective internet, I doubt it'll ever all out die... it is overdue for a revamp/renewal, though not sure it can get much greater than Rick Astley being involved."