I made that sign in my new Italian office and I thought everyone was going to fall on the floor laughing. They had to explain a couple of hand signs to be careful about.
One was putting your thumb in the middle of the 4 fingers (2 fingers on each side). They wouldn't tell me what it meant though. Can you (privately if you must)?
I believe it is the sign of the cuckold. I know that "putting the horns on" a man means sleeping with his wife. Though she does it as well when she sleeps with another man.
Oh it's anything of scandalous... Just stupied!
In Italy when a woman "sleeps" with another man that is not her husband... Well we say that her husband has horns and we do what Laura Bush did today...
In the most of cases just for jokes...
Can you tell me what's the meaning in America?