Supermarket Karma

I tend to play a bit loose with cart handling in the supermarket often allowing the cart to get yards ahead of me.  Today, I did a shove near the egg section and the weighting of the cart caused it to wail it into a freezer which then squealt (yeah, it’s probably not a word) like the compressor equivalent of a stuck pig.  And how did the universe return to alignment? The teller mischarged me by a factor of two and I lost 20 minutes of my life arguing with clerk that $6.00 – $2.00 – $0.79 does not equal $2.79.  At one critical point she had two calculators and a legal pad in front of her.