goodbye effect
n.— «The beam produces what experimenters call the “Goodbye effect,” or “prompt and highly motivated escape behavior.” In human tests, most subjects reached their pain threshold within 3 seconds, and none of the subjects could endure more than 5 seconds.» —“Say Hello to the Goodbye Weapon” by David Hambling Wired News Dec. 5, 2006. (source: Double-Tongued Dictionary)