Not about me, but rather the guy that owns the company I work (let's call him Mike for the sake for the story) - thought I'd share as I found it rather entertaining:
Mike had been searching for a very specific car for quite some time - a specific model of Porsche in a specific body style and colour combination. Not easy to find, but after a few months a good one popped up at a local dealer. Mike rang the dealer, had a chat about the car, and after a bit of haggling knocked the price down from $179k to $160k. Agreed to buy it over the phone - dealer to call back the next the day when it was ready to collect.
So, a few hours later the dealer calls Mike back and says "I'm sorry, but we've made an administrative error - we can't sell you the car for $160k, if you want to buy it you need to pay $162k". Knowing this is typical dealer BS, Mike tells them to GAGF on principle and hangs up.
The dealer calls back an hour later and says they've "re-worked the numbers" and can sell him the car for the original $160k price. Mike's reply: "Sorry, I made an administrative error and can't buy the car for $160k. If you want to sell it I can only pay $158k". Picked the car up 2 hours later and paid $158k for it