That fun game you play with your friends, if you have any, when you're just hanging out and someone goes "oh yeah, have you seen that?" and someone pulls up a video.
"I will see your nyan cat vid
. . . and raise you .. a Saruman Troll!"
I think it's pretty fantastic that my friends and interests are diverse enough that I can usually pull something new out no matter what group I'm with. All without having to constantly troll Youtube. Although news blogs do help so I get fairly quick exposure to most things that circulate, but every now and then, I get to dig deep into my back catalog and go "but have you seen THIS!?!?"
Advanced players see 4chan's "You Raff You Ruse."