No one is going to find this half as funny as I do, I assure you.
A loooong time ago while I was playing TF2, this angry little Russian kid came onto the server. Now, I don't speak Russian. I know only a small handful of words, most of them somehow relevant to James Bond.
...so, aside from hearing him scream spy periodically, I had absolutely no idea what the kid was saying.
Consequently, as I started to tune him out... I noticed that, for whatever reason, the combination of a squeaky voice with enough words per minute to break the sound barrier, and the Russian language...
made him sound like a tiny, angry little bird.
Granted, I was also on pain killers at the time.