refers to an individual who is exceedingly proficient in the art of performing "The Bat-Wing." (where ones scrotum is stretched out flat, to the brink of rupturing the scrotum and ejecting ones testicle, using two hands to replicate the image of a bat's wing.) Bradleys can work in teams either by presenting a series of "bat-wings" and performing choreographed routines; or by having multiple bradleys applying force to one bradleys scrotum to achieve what is known in the industry as a "Super Bat-Wing."
"That guy really pulled an accidental Bradley on himself yesterday when he didn't realise that his scrotum was caught in the rear sprocket of his motorcycle! It was stretched out that far I could read the label of the oil bottle on the other side through the skin!"