So I found a photo on facebook:
And while I usually don't believe in these facebook "Facts" I took a second to think about it myself since I'm a person that speaks a few languages (we have 4 national languages in Switzerland). What really surprised me is that I could see some minor changes in my behavior when talking in a different language but it doesn't apply to every language I speak.
Do people really change their personality based on the language they're talking?