I think it’s something between him and some close friends, at least that’s what I recall reading a few years back when I thought he used it so as to ‘shush’ everyone, in which case I would have been annoyed out of my mind to see football and politic (at least Romanian politics) antics into F1
or he has some sort of schizophrenia that manifests in his hands congratulating everyone for blowing their horns
I think I remember hearing that it was from some Spanish TV show as well, and I think he used to discuss with his close freinds what kind of crazy celebration he’d do on top of his car if he won when he used to do them back in the Renault glory days.
He said once that it came from a TV kids show, a very old show from Argentina o Uruguay showed again in spain in the 80’s. It’s called “El chavo del ocho”. Anyway, it doesn’t make any sense. It seems to be kisses to the people as I understand that this means kisses. I mean that if this thing did meant “go to hell” he wouldn’t use it.
Guys, it means “you’re talking sh*t”. AFAIK Fernando uses that gesture since GP Singapore 2008 – his first victory after long period without podium (GP Brasil 2007) or 1st place (GP Italy 2007) and McLaren departure. Media was used to talk like “Alonso is not so fast anymore” in 2008 season. For me, it makes perfect sense.