I use the Google Translator website sometimes when I want to read a foreign language on a web page. When I do, I take the translation and put it back through the translator again in reverse to see if still comes out the same, just to double check the translation. Sometimes the translation isn't at all what its intended meaning was.
For example... type in "How's your fucking dog?" and translate it from English to traditional Chinese. Then copy that Chinese result back into the translator and convert it back into English.
...I will never trust this device again!