Ian...ditto on the customers saying they're ready and then taking forever to decided after the fact.
More Chimeny Rock Inn/Restaurant ones...
-People who split a check under 15 dollars with two cards...yes this happened recently
-People who ask for micro-brew beers that would never be in a regular restaurant. Thank you for showing me that you are a true beer Kano-Saur sir, here's your cookie...now please pick from the list that's right in front of your face.

-People who ask what a Super-Salad is when I ask them whether they'd like a soup OR salad with their meal.
-People who order two or more different drinks for themselves at once
-People who finish their drink seconds after you give it to them, and then every 4 minutes until they leave
i coud go on, but not right now, im tired