Numa Numa
A very annoying repetative fad, with a annoying European song that just won't fucking die.  It's a video clip of some fatass dork, who looks like he ate 100 burgers, lip-syncing the song.  It's famous on Newgrounds.com, even though it's a flash site, not a video clip site, and everywhere on the internet and now on TV.

The song itself was originated from a Romanian boy band called "O-Zone"
Everyone at my school was singing the Numa Numa song, it made me want to shoot everyone in the entire school.

Everytime I heard the Numa Numa song, I wanted to cut my own ears off.