[MMM]

Originally Posted by IamKira

could you please elaborate and post some links to substantial/ credible news articles explaining how the pranks you speak of were harmful and where they happened?

Article: 'No match' measures, drive-by pranksters put premium on retention in quick... | AccessMyLibrary - Promoting library advocacy

For those unfamiliar with the numerous videos now surfacing on YouTube.com and other video-sharing websites, the prank involves jokesters who drive up to a drive-thru window, place an order and then proceed to yell, "Fire in the hole?" as they throw the drink back on the employee. These less-than-tasteful encounters are usually recorded on cell phones or other video devices to be posted online. The term "sophomoric" only begins to describe the behavior.
"Fire in the hole" is a warning more commonly used by demolitions personnel when explosives are about to go off. While less deadly in the drive-thru setting, the phrase is no less volatile. Many employees have described feeling demeaned and infuriated by the prank, and some have even thrown drinks back at offending customers--which really doesn't constitute good service, but just might be warranted. Usually, the pranksters order a drink and then heave it back, but in one instance in Pennsylvania earlier this month a Subway employee was hit with a liquid transported by the jokers that was believed to contain ingredients like pepper juice that stung the employee's eyes. Needless to say, police are hot on the trail of that offender.