serve as a/(one's) guinea pig

serve as a/(one's) guinea pig

To act or function as the object of a test, experiment, or assessment. We'll have a limited release of the product and let this region serve as a guinea pig. If it is received well, we can expand production and distribution to the rest of the country. A: "I have a wild new dish I'd like you to try!" B: "No way! I have no interest in serving as your guinea pig again."

See also: guinea, pig, serve

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