Jane thinks she's the bee's knees

[alpacinou]

Have I used "bee's knees" correctly? Are these okay?

1. Jane thinks she's the bee's knees. She thinks she's the best dentist in the world but most of her customers would disagree.
2. Based on their advertisement, you would think the car is the bee's knees, but it's not a good car at all.
3. My wife is really the bee's knees. She's sweet and smart.
4. That blue dress was the bee's knees. It looked great on you.
5. I go to a restaurant near my workplace. Their pizza is the bee's knees.
6. You're the bee's knees. I'm lucky I have a friend like you.

 

[probus]

In my opinion it's very dated slang and should therefore be avoided. But aside from that your examples are all okay.

 

[Tarheel]

@alpacinou That expression was current during the 1920s. I doubt that there are many people these days who are familiar with it.

 

[emsr2d2]

It's well-known in the UK but I wouldn't expect anyone under about 40 to consider using it.