When a man asked if he could buy a jar, they knew they were onto something.

FORBES: Success Story: Think Outside The Pickle Jar

When a man named Nick approached his table Tuesday, Rose asked where he was from.

WSJ: Pete Rose Works Full-Time Selling His Signature in Las Vegas

When they confronted the man and asked for identification, he drew a handgun and opened fire, police said.

BBC: Three New York police officers shot and wounded

When a uniformed Secret Service guard asked if he could help him, the man began walking along the fence toward the guard.

CNN: Man sets self afire outside White House

When she asked the man, who claimed he was an engineer, a physics question, he got it wrong.

CNN: SHARE THIS

When asked if his son met with the man charged with trying to blow up a U.S.-bound plane on Christmas day, al-Awlaki's father said it's not likely.

CNN: STORY HIGHLIGHTS

When asked about his contribution, Guriev declared that he had every right to do so as a free man.

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Britain's Barclays bank was publicly embarrassed in January when a British lawmaker quizzing its boss, Bob Diamond, asked him how many subsidiaries it had in the Isle of Man, Jersey and the Caymans.

ECONOMIST: Tax havens