On the way out I said to my waitress, "Be careful, Sue. There's something funny about the glasses you gave me - they're filled in on the top, and there's a hole on the bottom!"
If the tip was a dime in one glass, the waitress, in her haste to get the table ready for the next customer, would pick up the glass, the water would spill out, and that would be the end of it.
Japanese Dictionary
