Just popped to Tesco on my break to grab something for dinner tonight. I was stood in the veg aisle next to a couple with their DS who looked about 4 in the trolley. Their DS was having a bit of a moan and I heard the mother say to him "I will leave you here if you don't shut up." I thought this was a bit harsh but I understand sometimes we get frustrated with young DC and say things without thinking. The boy didn't "shut up" though, so the parents went round to another aisle so they were hidden from view from him. Obviously the boy thought he had been left and started to cry, while the parents stood there watching him and giggling.
When they saw me glaring at them they went back round to him. I know it's not my business to get involved but AIBU? I thought it was shocking behaviour to be honest and I wouldn't do that to my DS no matter how frustrated I was.