Non horse related...happened to me today...but always pisses me off.
I drive a diesel truck, I go to pull into the diesel pump, which in the smaller gas stations there is only one diesel/gas combo pump and the rest are gas pumps, and there is some little gas car using the diesel/gas pump when there are others available and I have to wait. I thought it was common courtesy not to use the only diesel pump if other gas ones are available..maybe not...maybe I made it up..lol
I usually drive up on their bumper, leave the pickup running and give the impatient cow look through the windshield...
Totally agree with the grocery shopping...I speed shop...there usually are casualties. That's why I go early in the morning, all I have to do is dodge the old people.