be no (或 nobody's) fool

be a shrewd or prudent person

并不傻，精明

a fool and his money are soon parted

(proverb)a foolish person spends money carelessly and will soon be penniless

(谚)蠢人不积财

fools rush in where angels fear to tread

(proverb)people without good sense or judgement will have no hesitation in tackling a situation that even the wisest would avoid

(谚)智者三思之事蠢人急不可待

make a fool of

trick or deceive (someone) so that they look foolish

愚弄，欺骗（某人）

more fool ——

used as an exclamation indicating that a specified person is unwise to behave in such a way

（某人那样做）真傻

if suckers will actually pay to do the work, more fool them.

如果有笨蛋愿花钱做那种事，那真是傻透了！。

play (或 act) the fool

behave in a playful or silly way

扮丑角，逗人笑；做傻瓜，干蠢事

there's no fool like an old fool

(proverb)the foolish behaviour of an older person seems especially foolish as they are expected to think and act more sensibly than a younger one

(谚)老人做的蠢事最愚蠢

you could have fooled me!

used to express cynicism or doubt about an assertion

你别骗我啦！（对别人说法表示嘲讽或怀疑）

‘Fun, was it? Well, you could have fooled me!’.

“有趣，是吗？得了，别骗我啦！”。

fool around 【非正式用语】

To engage in idle or casual activity; putter

干一些无聊或随便的事；懒散地工作

was fooling around with some figures in hopes of balancing the budget.

懒散地算着数字，希望能平衡开支

To engage in frivolous activity; make fun.

做轻浮的事；开玩笑

To engage in casual, often promiscuous sexual acts.

滥交：从事随意，常是乱搞性行为

fool away

To waste (time or money) foolishly; squander

愚蠢地浪费（时间或钱）；挥霍

fooled away the week's pay on Friday night.

周五晚上花掉了整个星期的工资

play the fool 或 act the fool

To act in an irresponsible or foolish manner.

出丑：以愚蠢而不负责任的表现

To behave in a playful or comical manner.

以滑稽，玩笑的方式行动