"看男人腹肌" 的英文表达是 "to look at a man's abs"。它的来源可能源于人们通常会在男性的腹部肌肉发达的地方看到腹肌。下面是一些例句：

I can't stop looking at his abs. 我看不停他的腹肌。
She's always checking out guys with six-packs. 她总是在瞄男人的六块腹肌。
He spends hours at the gym every day to get a defined six-pack. 他每天花上几个小时去健身房，为了拥有清晰可见的六块腹肌。

希望这些例句对你有帮助。