5. Superglued Walmart toilet seat, 2011. In a prank attempt that had no chance of being funny, somebody put superglue on a toilet seat in a Walmart public restroom. The unfortunate victim required the assistance of several emergency crews and medical professionals.

4. Dihydrogen monoxide scare, 2013. Two morning radio show hosts announced that area residents had dihydrogen monoxide coming out of their faucets. While those who took a moment to Google the term learned that it meant water, most didn't and soon the local utilities were flooded with panicked calls. The duo was quickly removed from the air, but put back on 2 days later.

3. Romanian Prison Release, 2000. After reading a piece in a newspaper, 60 people thought their friends and loved ones were getting out of prison. They arrived, only to be told, 'April Fools'.

2. Racially offensive office prank. Somehow, a group of grown professionals thought it would be hilarious draw one of their coworkers as a drug-addicted monkey and they post it for all to see.

1. Erupting Hill in Boston, 1980. With some clever edits, broadcasters from a local television station were able to convince people that a hill was erupting like a volcano. The April Fools part of their prank didn't come until the end of the segment. It was too late, as viewers had already started to react as if it were real.

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