double punch
Sports term for a simultaneous or rapid two-fisted punch, especially in boxing.
The boxer threw a double punch.
one-two punch; double whammy; twofold blow
Figurative use for two negative events or forces hitting at once, or a powerful combination of two things.
Households are struggling under the double whammy of tax hikes and rising prices.
That comedy duo's appeal is the one-two punch of the funny man and the straight man.