Being pedantic
I'm a geek. I'm pedantic, particular, picky, and do my grocery shopping by mentally calculating the best deal per weight or volume. Tonight, after over filling my shopping basket, I tried to get money out on top of my $50 of groceries. To my surprise, the transaction was rejected, but proceeded without the extra cash.
It turned out my mortgage repayment had come out a little early than I expected. You see, I literally try to put every spare dollar I have into the mortgage. This has worked very well for the last few months, but I've had a few close calls around the time the automatic payment comes out.
Checking my bank balance tonight confirms that indeed, the mortgage payment went through this evening. Subtract another $50.06 for the groceries and I'm left with 22 cents in the bank. And that, ladies and gentleman, is why I buy cat food by the Woolworth Select 100mL tins for $1.00 each, rather than the bulky looking 200mL tins at $2.06 each. Four of the larger tins instead of eight of the smaller would have cost me 24 cents extra, and made for a particularly embarrassing checkout experience.
Praise be to obsessive compulsive tendencies.