One fun thing you can do with Siri’s voice is change her accent and even gender in the settings. You can do this by going into Settings –> General –> Siri –> Language, and choose from over a dozen new accents, even giving her a male British voice. It’s fun, but here’s the thing, you should always change Siri back to your native language…“native” meaning, if you’re American, set it to English (United States), not English (United Kingdom).
Why? Because Siri’s ability to understand you will diminish greatly if she’s set to anything but your native language. Siri is designed to understand a specific accent that is designated in your iPhone’s settings. So if she’s expecting to hear a British accent but you’re a speaking with an American accent, she will be confused and translate your words into crazy things. While it’s funny, it’s not very useful.