yup very old, but still funny. there was a funnier version with incorrect subs, whoever had re-subbed it made out he was playing a football manager game and was cursing the players.
It could be real, if the kid had a history of stuff like this, his parents or friends could have set up a camera to catch him.
on the subject of the numa numa guy, there was this guy singing it far earlier than him :
http://www.youtube.com/watch?v=QX_gN2DFh74







