Bumble bees are pretty passive. As much as I used to play with them, I've never been stung. Wasps are more aggressive, and their stings do hurt, but yellow jackets are the worst. They can keep hitting you because they don't loose their stingers.
My granddad had a bad bout with those yellow jackets , they come out of a grass compost pile after him , and he said they hit him so hard they knocked him down getting to the house
He was welted up and sick for a few days ,, but he survived , But he got his revenge , he burned the grass pile
