The Fifty Headed Hydra

Can you write 500 words in 5 minutes?

Fifty headed what?

The Fifty Headed Hydra is a popular NaNoWriMo challenge. The definition below is taken from WikiWriMo:

Fifty Headed Hydra: write 500 words in 5 minutes. Named for a writing sprint during a Virtual write-in in which one of the NaNo interns wrote 500 words and the only words spelled correctly were "fifty headed hydra".
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