Wiktionary
ball-breakers
n. (ball-breaker English)
Usage examples of "ball-breakers".
They were absolute ball-breakers which, not coincidentally, was Tony's designation for the highest difficulty codes he was given to crack.
At an early age they had been seized in West Africa and separated from their mothers by this new species, the humans, and removed from all familiar surroundings and put in cages and shipped to this godforsaken alien landscape, the New Mexico desert, where they remained in cages… when they weren't in the hands of a bunch of human ball-breakers in white smocks who strapped them down and zapped them and put them through insane exercises and routines.