You know the noise we’re talking about, right? The one Cristiano Ronaldo made as he was collecting his second straight Ballon d’Or last night?
This one?
But what exactly is he shouting? According to this ITK reporter, it was a war cry of “si”.
In case you wondered, Ronaldo's war cry is "Siiiiiii". Yeeees. I know it doesn't sound like that but that's what he says he shouts
— Guillem Balague (@GuillemBalague) January 12, 2015
That’s fine, but kind of dull, so here are some other suggestions…
C

It was the letter ‘C’ – he was just loudly proclaiming his first initial for all the world to hear, because Cristiano Ronaldo.
See

As in: “See? I told you I was better than Messi.” Ronaldo was essentially shouting a massive and classy “told you so” to the world.
Si
He was was indeed shouting “si”, as in “yes”, but in tribute to Stiletto from Danger Mouse.
Anyway, whatever he was shouting, it now features in a million Vines which are as funny as they are inevitable. Vines like these…
Whatever the hell you were doing, Cristiano, well done for finally taking the Ballon d’Or limelight from Lionel Messi’s suits.
Source: SNAPPA