Based on this example — spotted by Erin in the employee restroom of an AT&T Store in Los Angeles — I think the Kiwis have a clear edge over us Yanks…at least when it comes to smartass bathroom snark.
![If you need to extract dried mucus from your nose, please use a tissue. The bathroom walls are not the place for them. [Response 1:] It's called](http://farm5.static.flickr.com/4111/5053025085_ce7183c3e3.jpg "If you need to extract dried mucus from your nose, please use a tissue. The bathroom walls are not the place for them. [Response 1:] It's called \"performance art.\" Expand your horizons. [Response 2] *Expand a couple sheets of tissue")
related: The bathroom-stall booger epidemic
extra credit: National stereotypes according to Google Autofill [buzzfeed.com]