the meaning of "Don't be cute"

[Penny Lane]

What is 'cute' supposed to mean here?
When A is talking serious, and B responses, like, with a joke or something,
A goes,
"Don't be cute!"
Does it mean, "Stop joking." or "Don't be cheeky, smart-arse" or something?

Thanks!

[Kitosdad]

Yes Penny, exactly that. Don't try to be clever!
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