I paid my way thru college painting billboards. This was at least 45 yrs ago. About my 2nd week on the job, I was climbing about 40' up the back of the board, reached up and grabbed a piece of angle iron to pull myself up. On the back of the angle was a big wasp nest, right where I grabbed. Never before has a monkey climbed down so fast in its life.
When I hit the ground, I counted 12 stings. At one point, a wasp was between my sunglasses and my eye. Guy I was with asked if I needed to go to the hospital. When I said no, he said " you pissed them off, now go kill em'. A cup of paint thinner made quick work of these demons.