guinea pig

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As he buttoned up a professional baseball uniform for the first time in his life, he understood that he was becoming the guinea pig in an experiment that has the whole industry watching.

From The Wall Street Journal • Nov. 25, 2025

"It just feels as if mum was a guinea pig, which is not nice to think about."

From BBC • Jun. 4, 2025

His lead, Pattinson’s Mickey Barnes, is a dopey, instantly lovable voluntary “Expendable,” jettisoned into space to be a human guinea pig who will be pivotal in colonizing a faraway planet.

From Salon • Mar. 7, 2025

As well as directing Super Size Me, Spurlock was the film’s star and guinea pig as he ate dozens of Big Macs and Chicken McNuggets and drank gallons of cola.

From BBC • May 24, 2024

But just as he began losing hope, the door made of sticks and vines flew open and a very large copper-haired guinea pig with glasses and a cane stomped out.

From "The Way to Rio Luna" by Zoraida Cordova