English idiom: a bee in (one's) bonnet

[Andreas Berklin]

English Language Tests, Intermediate level

ESL/EFL Test "Charlie's Knees", question 1

Charlie always thought he was the ......... knees because he had a very good opinion of himself.

(a) cat's
(b) dog's
(c) bee's
(d) mouse's

English Language Tests, Intermediate level

ESL/EFL Test "Charlie's Knees", answer 1

Charlie always thought he was the bee's knees because he had a very good opinion of himself.

Correct answer: (c) bee's

Your answer was: incorrect
Charlie always thought he was the cat's knees because he had a very good opinion of himself.
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why bee

[Alan]

Hi,

This is an expression meaning very self important and is an idiom.
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English as a Second Language
You can read my ESL story Make or Do?