a combination of two unfortunate or negative circumstances or events
from Li'l Abner cartoon strip
This “double whammy” of predation and competition enables jellyfish to cripple a food chain by essentially nibbling at its ankles.
Why new cuts will be a double whammy for Bentonville—and anyone with a mutual fund.
Or forced on him by the double whammy of tyrannical father and angelic, but deceased, mother?
Who can forget in 2012 the double whammy of GOP Senate candidates comments about rape?
“The double whammy of those two set me on a course of thinking about issues I had never done before,” Sherwood told the Times.
A two-part or two-pronged difficulty; a dual disadvantage: the double-whammy of steep home prices and steeper interest rates (1940s+)