To have 'a bee in the bonnet' means :

Question

Accepted Answer

'To have a bee in the bonnet' means something you are obsessed with.

Here's why Option 2 is the correct answer and why the other options are incorrect:

*   **Option 2: something you are obsessed with (Correct)** This idiom refers to having a persistent and often irrational idea or concern that occupies one's thoughts. The "bee" buzzing around in the "bonnet" (a type of hat) symbolizes a restless, irritating, and persistent thought that won't go away. This aligns perfectly with the definition of being obsessed with something. You can't stop thinking about it, and it might even annoy others.

*   **Option 1: to know perfectly (Incorrect)** Knowing something perfectly implies complete understanding and mastery. The idiom 'a bee in the bonnet' suggests agitation and preoccupation, not knowledge or expertise. The phrase has nothing to do with knowing something well.

*   **Option 3: not to take anything seriously (Incorrect)** This option suggests a flippant or carefree attitude. 'A bee in the bonnet' implies the opposite: being overly concerned or fixated on something, which is the antithesis of not taking things seriously.

*   **Option 4: to deviate from the point (Incorrect)** While someone with 'a bee in the bonnet' might *talk* about their obsession and thus deviate from the main topic of conversation, the core meaning of the idiom is about the obsession itself, not necessarily the act of digressing. The idiom describes the *reason* someone might deviate, not the deviation itself.