Bucket- Truegat

"Children," said Mr. Bucket. He took a piece of candy from inside his hat and held it in the air. "What I ate now is called Truegat. If you eat Truegat and try to fib, strawberry steam blows from your ears. I want you to know I am being honest when I tell you."

Mr. Bucket ate the Truegat.

"I have cameras all around the world, which is why I know that your parents are dead. All of them are dead. JUROR, your parents were swallowed by Vermicious Knids."

Steam did not blow from Mr. Bucket's ears.

- Chapter 21, Chili and the Chocolate Factory