say I am selling something for $5000 and did not state OBO...they offer 4000 and I will counter with 6500. I will get a response like "you can't do that!!!!" Some people get the point quicker than others and some get downright pissed off . It's fun to watch how people interact with others in different settings.

I did that to a little old lady that came to my last yard sale and I thought she was going to shoot me. She came in with a grumpy attitude, I tried a few jokes and tried to cheer her up, others at the sale saw what I was doing and knowingly smiled in my attempt to brighten her day. She'd walk around ask prices for about 10 minutes and finally was turning into a Debbie Downer and killing the atmosphere of the sale. She asked what I was selling something for, I forget what but lets say $10, she says something like its worth $5, so I then said, ok make it $15 and you have a deal! Her face lit up, she started spitting fireballs and dressed me up and down with a few choice words after saying to me..."you can't do that !!!!!!" Kept going for about five minutes and finally had to kick her out to the applause of other shoppers. A truly surreal experience.