These bosom buddies aren’t pumped about their new workload.

Their bra company’s boss ordered the hapless guys to hang weights around their necks — so they’d get a sense of what it’s like to have boobs.

Belgium-based PrimaDonna CEO Ignace Van Doorselaere fitted them with weights to mimic E-cup breasts weighing about 2.2 to 3.5 pounds.

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That way, he reasoned, the newly endowed men could appreciate how important it is to manufacture functional, supportive and comfortable bras.

“As a man, how can you know what it is like to have a bigger cup size?” he told the Mirror of the UK.

“You make lingerie for women with a larger cup size but you have no clue,” he said. “But there is only one way for a man to realize what an E-cup feels like … and that is having an E-cup.”

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