I always thought that german and russian sounding angry to english speakers had less to do with the actual sounds in the languages and more to do with the fact that germans and russians have been portrayed as villains in Hollywood for… almost as long as there’s been a film industry. World War 2 and the Cold War. Thinking about it now though, and I think GOD might be right (I feel dirty saying that).
After all, german is a guttural language compared to english, at least from my (limited) experience with it. Russian… might be? I don’t really know. What I do know is that a great many of english’s most impactful curse words also carry very guttural vowel sounds. I’m not sure what the board’s stance on cursing is, so I won’t put up a list. Suffice to say that many are four letter words with a U in the middle.
Then again, it might be the Hollywood thing.