screaming at the market

I went to the market today at lunchtime to pick up some veges for the stew I'm making for dinner tonight.
I walked up to the main entrance, and as I approached, a woman picked up a bunch of grapes, screamed, and them threw them on the floor in front of me. I stopped in my tracks, looked at the grapes on the floor, looked up at the woman, and...I was dumbfounded. I had no clue what had just happened.
Eventually, I found out that she had picked up the grapes, and a wasp, who was hiding in the bunch, stung her hand.
I smiled, let her compose herself, and waited for her husband to pick up the grapes so that I could pass. (I think he was as dumbfounded as me when she first screamed!)

I didn't buy any grapes.