
Talk a good game
Confidence vs. Capability
The phrase often implies a disconnect between what someone says they can do and what they actually achieve.

Despite claiming to be a top-tier programmer, he seemed to only talk a good game.
Skepticism Cue
Use this phrase to express doubt about someone's abilities when they haven't shown proof.

She always talks a good game about her leadership skills, yet her team is in disarray.
Informal Idiom
Best used in casual conversations or informal writing, not in formal contexts.

At the party, he talked a good game about his investment strategies.
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