[mkotowski]

> for Italian hnewers, this means "please wait" for the rest of the world

Central Europe here, I doubt this gesture would be understood here that way. The closest meaningful gesture would be demanding money (if the thumb would move along the index finger).

[tspiteri]

It depends on the hand motion.

https://www.youtube.com/watch?v=oZk5rAVuNsc&t=15s

[_ZeD_]

that is a totally different gesture (and with the same meaning in italy)