Originally Posted by
hedur
Interesting. I had never heard of this but apparently leaving two pennies is a way to communicate your dissatisfaction with the service:
...
Is this common knowledge?
Not specifically to me, but it makes sense. Indeed, any risibly small tip would give that message clearly enough though: Australia, for example, does not have "pennies" but if you left a 5 cent tip or even a 50 cent tip at the end of an expensive meal the obvious message would be that you would normally tip more (some people in Australia may not tip anyway) and, no, you didn't just inadvertently forget on this occasion.