Take (someone) for a fool phrase
To think, believe that someone lacks intelligence.
You think that I can be cheated so easily, don't you? You must be taking me for a fool!
Those having taken me for a fool were all in awe after I solved that puzzle.
The king mistakenly took his servant for a fool and got dethroned by that servant.
The verb "take" must be conjugated according to its tense.
The origin of this phrase is not clear.
A problem or difficult circumstance
I'm short-sighted, so forgetting my glasses is a real hair in the butter for my sight.