Today when I was reading mX, I came across an interesting article about an entomologist from the University of Arizona. This man is Justin Schmidt. His area of expertise is Hymenoptera, the family of insects which includes wasps, bees and ants, so it's no surprised he's been stung over 100 times.
Throughout his career, he conducted personal research and "unintentionally" came up with the The Schmidt Sting Pain Index, a system developed to compare the relative intensity of Hymenoptera stings. This "research" involved provoking the insects to the point of rage, when they would attack/defend themselves. Each sting is on a rank between 1 to 4. Here is a sample from
Wikipedia which includes their rank number and a description of the sting by Schmidt:
1.0 Sweat bee:
"Light, ephemeral, almost fruity. A tiny spark has singed a single hair on your arm."