Unfortunately for you I am exactly from southern Europe, from Rome in Italy to be precise.
I think you should visit here, I would show you how much noise people from other countries make, especially Americans.
I'm sure you made it as a joke and I don't mind it, but this stereotypes must stop, for a simple reason: there is more to Europe than jokes about southerners.
We simply spend more time outside in the open because the weather is usually better, but any country has its weirdos, sometimes public is a park or an open market, sometimes it's a pub.
French are rude and the fact that they try to hide it behind "other people don't understand us" makes it even more obvious. Ironically they think the anglofones are the loud ones and I mostly agree on this with them.
Pure io e ha un po' rotto le palle che davanti agli americani che si sparano per cazzate noi continuiamo a fare la parte della scimmietta simpatica che strilla per le strade
How do I know you're certainly not from Southern Europe?)