"These wasps are relatively docile for a wasp and rarely sting without provocation though the sting, particularly of Pepsis formosa, is among the most painful of any insect. Commenting on his own experience, one researcher described the pain as "…immediate, excruciating pain that simply shuts down one's ability to do anything, except, perhaps, scream. Mental discipline simply does not work in these situations."In terms of scale, the wasp's sting is rated at the top of the Schmidt Sting Pain Index, second only to that of the bullet ant and is described by Schmidt as "Blinding, fierce [and] shockingly electric.". Because of their extremely large stingers, very few animals are able to eat them; one of the few animals that can is the roadrunner."
Did I just Wikepedia??