Here's a silly 'game.' Stereotypically, when I hear French, it always sounds like they're whispering sweet Romantic nothings to each other. Or that they're discussing everyday things like food and sex in the most philosophical, intellectual terms. What does it SOUND like they tend to talk about (obviously they say the same things as you and I, duh)?
German - it sounds like they enjoy talking about very practical matters. 'Hans, you calibrated the death ray 0.25 mm too far to the west! I suggest you correct your mistake immediately and report to headquarters to be reprimanded! You need to be exact, exact as a machine!'
Dutch - Discussing the best cafe to find weed in, or the best place to find cheap whores.
Spanish - Similar to French, it sounds like they like to complain, a lot. 'Jose, he always do me wrong! I don't know why men are such bastards! Aye carumba!'
Brazilian Portuguese - 'I f**ked Paulo up real good! That ****** from Sao Paulo now knows the real meaning of pain! We don't mess around here in the favelas!'
Italian - Similar to French. Complaining about how bad young people are these days. 'You know, Luigi, isn't it about time you settled down to marry? You know it is not proper for a man to be 35 and single! Maria has wide hips and she cooks well, I think she will a produce a good son, one to carry on the Fettucine name!'
Russian - If you were cross me again I will kill you! And your mother and father and children! Or...those bloody Americans!
Mandarin - It sounds like they're constantly dispensing Confucian proverbs. 'Wise is the man who knows how to sacrifice his dignity and stoop the lowest. Foolish is he who has scruples, when living under Party rule.'
Cantonese - Constantly discussing ways to find the cheapest bargain or make money. 'Ah! Why you didn't go to this market? This one 50 cents more!'
Japanese - Discussing something technical...In those old samurai movies or WWII movies it is often shouted and sounds angry. 'How dare you dishonour the Shibuyatsu clan with your cowardice! For this, you must commit ritual suicide!' 'Hi, sensai. I shall prepare my body and soul to welcome the taste of cold steel!'
Korean - Sounds whiny, 'this kimchee is too sour!'
Thai - 'I ruv you wrong time, sir! Sir, you want massage?' Or rather that's what they say in English. In Thai, among themselves, 'those farangs are my cows! Milking them is like milking a cow!' (not that most Thais even drink milk haha)
Hindi - 'Ah, Suraya and Sanjeev want to get married? Never, never will I allow my son to marry that dark skinned outcast girl! Oh why Lord Krishna did you allow me to be reborn into a life with such suffering?'
Arabic - 'Get the bombs ready, Achmed. Death to the Infidels!'
Greek/Persian - Doesn't our language sound so classical? It's so ancient, respect it!
Some African languages - Sound a bit robotic. 'We were so happy the day we were free from the white man. That was the happiest day of my life. Now we shall celebrate with a feast of bushmeat.'
Australian Aboriginal languages - 'Best widgety grub found here! That one tasty!'
PLEASE discuss what you'd stereotypically think they were talking ABOUT or the way they say things, moreso than the sound of it. If this offends you don't join it. Don't be hateful, of course, it's for those who can take a joke.