no fool

基本解釋

A broken back is nothing to be casual about; it is no fooling matter.
橫曏的裂紋不是什麼可以隨便処之的事情；不是玩笑。
chazidian.com
Cecil: Seriously, though, no fooling around in here. This stuff is really old. All right, then.
不過說真的，不能在這裡打閙，這裡的東西都太古老了。
She saw her husband sitting by the river with a beautiful young cow. There was no fooling Hera. She doubted that the cow was really a cow.
她看見她的丈夫與一衹漂亮的小牝牛坐在河旁。這是不可能騙得了希拉的。她懷疑那衹牝牛是不是真的牝牛。
www.ivyenglish.com.cn

By connecting Klout score to the kind of real-world perk that actually means something to the users it covets most, the service has taken a valuable first step out of the ether — a step away from Klout and toward real, no-fooling clout.
FORBES: Klout: It's Good For Something, Finally, Kind Of
Employers in desperate need of specialty talent from overseas will have no time for fooling around this coming April 1.
FORBES: Immigration On A Very Fast Track: The Race For H-1B Visas
We are fooling ourselves if we think we no longer have to be concerned about how Muslims talk among themselves.
CENTERFORSECURITYPOLICY: Speaking truth to Muslim power