I learned about the brilliant Fakebook (fake Facebook pages) and Twister (fake Twitter messages) at the MFLSAT meeting at Cramlington Learning Village last month. I have just this evening (thanks to @nikpeachey) discovered ifaketext.com, which will reproduce a screenshot of a text conversation on an iPhone. I just tested it out – the foreign characters appear in the image which is generated, but disappeared into nonsense when I embedded the result in my blog (which may indicate an issues with WordPress – perhaps you could tell me?). But I took a Jing screenshot below.
Not the most imaginative conversation, but I hope it illustrates the point.