Just remembered, when I was a young teenager, I used to mow some grass at the dairy farm up the road. There was a little pile of hay laying in the yard, right as I ran over half of it I looked down and saw a softball sized hornets nest. I was on a good sized JD hydrostatic riding mower. Pushed the lever to full speed forward, engine bogged until I killed the pto. One of them stung me on the back of my arm. Hit a hornets nest mowing hay last year also... enclosed cab would have been better.