Activate your prior knowledge of the figure of speech.

Ask yourself: Have I heard this word or phrase before? If I think that this is an allusion, what do I already know about the person, place, event, or work of art or literature being referenced?

As an AI language model, I don't have personal experiences or prior knowledge in the same way humans do. However, I can provide information and help you understand figures of speech and their allusions based on general knowledge and available references. If you have a specific figure of speech or allusion in mind, please provide more details, and I'll do my best to assist you.