Rebuttal and a Moral Dilemma

Well, it's seems I have a rebuttal.
Not a comment, a rebuttal -an out and out dispute!
My dear MAC friend commented on my post yesterday:

..."cleverly turned on the microphone app. on my iPhone" ...?
Really J – you are no 007.
Perhaps it was the wine – three glasses of it – that distorted your perspective and diminished your slight of hand. Yup, that must be it.

First of all, lets clear a few things up.
2 glasses not 3.
I can't drive on 3...just stating a fact for all you 'coppers' out there!

Secondly, I wasn't being stealthy.
I admit it.
I took out the phone, turned on the microphone and said something to the effect of:
"Don't talk about me behind my back. I'm taping you!!"
Then I put it in full view on the table and dashed to the washroom.

Never in my sweetness and innocence did I imagine that they would tamper with my Facebook!
Hold on........!
Sweetness; innocence; thinking that my friends were trustworthy.....
She's right, it must have been the TWO glasses of wine.
My judgement was distorted.

However!
At the end of the evening I was very stealth-like (just like 007) when I discovered a huge error on the bill, slipped it across the table (very indiscreetly) and exclaimed in a stealthy whisper,
"She didn't charge us for everything!"

So this is where the moral dilemma comes in....
What do you do?
Do you pay the under-charged bill and run? Do you tell the waitress?

How about at a cashier?
If they give you too much change do you run with it? Or tell them?

At a bank machine....if you arrive at a machine only to find money sitting in the slot do you take it? Do you return it to the bank?

Someone drops money as they walk by you, do you pick it up and pocket it?
Do you return it to them.

Money! The root of all evil!

Bet you want to know what we did, don't you??